Question: Did the examiner clearly say the first maneuver wasn't passing and ask if you'd like to continue the ride?
There's a big problem there if they didn't.
But...
Whether you want to pursue it via the CFI and FSDO is a whole different ball of wax.
That said...
Lazy 8s: Your description of the Lazy 8 leaves me wondering if you busted the airspeed limitation on the way back down to the entry altitude. It's hard to not speed up too much if you get high in that maneuver. What do you think? It's *really* lazy ... if you don't want to build speed on the way back down.
Steep turns: I would want to see how much back and forth you did if the complaint was that you didn't "set" opposite aileron to counter the over-banking tendency. This is a maneuver that if you really nail it, the bank angle simply doesn't change. You roll in and hold it. In turbulent air you'll be fussing with it a bit, but in smooth air this is a "locked" maneuver really. How close were you to that?
Chandelle: I can't make heads or tails of your version so I'm skeptical but willing to listen. You said he busted for both "airspeed needs to not be stationary" and at the end said he busted because "airspeed didn't remain constant". Those two don't match?
That's all armchair quarterbacking with a LOT of assumptions. You didn't mention anything about power settings in any of those, so there's another facet where we just don't know what happened across the Internet.
My "feel" is that you have the basics of the maneuvers down but they were not done in a manner where the examiner felt you were in command of the aircraft completely. The "constantly adjusting bank throughout the turn" of the steep turn is what's giving me that feel in my mind's eye. While flight conditions don't always allow them to be perfect, these are precision maneuvers in a sense. If you're not correcting anything that's wrong immediately and saying so out loud, you're doing yourself a disservice or you're a little behind the aircraft. Maybe not a lot, but if someone can count to two-potato before you start fixing it, that's too long. IMHO.
What do you think? This is difficult to assess over text online and my smile doesn't come across as I'm saying the above, either.
So let me add a little sage wisdom a friend of mine taught me...
Checkride busts aren't so bad. The penalty is that you have to go fly more.
And if it helps, the above is coming from a guy who busted his SE add on Commercial not because of any of maneuvers -- those were freaking nailed -- but because I went completely brain dead at landing MY OWN AIRPLANE! God that both hurt bad and also made me laugh harder than I have in years.
The examiner, after I did my best impression of Captain Kangaroo bouncing between all three tires on my own 182 I have hundreds of hours and landings in, almost sheepishly says, "You know I can't accept that, right?"
I got the airplane under control and stopped and said, "I don't blame you, *I* can't accept that. Holy hell!"
He PROPERLY asked me if I wanted to continue the ride and get credit for items I got right, and I happily accepted and we zipped out to the practice area where I completely nailed the maneuvers, and then made a barely passable soft field landing when we got back... so I got credit for that.
But we had to reschedule for Easter Sunday to just go up and do landings. Which I then proceeded to even surprise myself on after a couple of days of just hammering on them to work out whatever the problem was with the CFI and also solo. Basically I had just strangely changed my flare point and where I was looking. By the re-ride, I made the most beautiful power off 180 with the softest touchdown right on my announced spot that I've ever made. Just floated right to it like the airplane was on rails thinking I almost didn't have the energy to make it... juuuuuuust another twenty feet baby... keep gingerly pulling... feel the remaining lift start to fade.... kiss. Freaking gorgeous. I probably couldn't do one that nice one in ten times even when doing it all right.
So...
Get up. Get back in the saddle. Never any harm with getting another instructor's opinion too. If your instructor is rusty, grab one who's done a bunch of commercial rides lately. And ask them to demo the maneuvers and talk about what they're fixing and when.
And smooth it all up. You'll nail it.
It's all about complete command of the aircraft and control. My gut feel is the examiner was left with a question in their head or whether you had that level of command. I know that's vague, but you'll know the level when you see it. No oscillating, no chasing, just put the aircraft exactly where you want it and it should be.
Another tip. I personally cut the standards in half when practicing. If the standard is 100', I'm considering the maneuver a mess if I don't do it within 50'. This way, my personal standard is well inside the PTS/ACS for the maneuver. If the landing has to be within 200', I want it at 100' consistently. Because under stress if I "botch" MY standard, I'm still likely to be well within the ride standard.
Get a little mad and kick the standard's butt. LOL.
It was Doc Bruce who gave the phrase I like to apply to checkride standards, here once. And he was referring to other things, but I know he applies it in many aspects of his life...
"Don't accept minimum standards."
Remember. See me smiling. See me ready to go up and show ya. Positive. The above reads negative in text online. No intent at that. At all. Think "tough pep talk".
Go fly. Make that airplane do what you want it it! Pilot in COMMAND baby!
Edits: Fixed typos.