You are not alone with check ride people who struggle with this reg. ATC can’t talk to you, so the reg provides you and ATC a plan for what should happen.
There are 6 elements.
VFR conditions - if you are in VFR conditions you can clear your own traffic, stay there and land.
Route - Fly the route you were cleared to fly.
Radar Vectors - Take a direct route from the point of radio failure to the fix, route, or airway specified in the vector clearance. This includes vectors for an approach.
Altitude - Fly your assigned altitude, but climb if when you need to maintain the minimum charted altitudes. If ATC advised you an altitude to expect, use that altitude when the time expires, (3000, expect 7000 in 10minutes). Do not leave your altitude early. See Clearance Limit.
Clearance Limit - if the clearance limit is a fix enroute, hold until EFC time expires.
If the clearance limit is your destination, upon arrival at the airport proceed to a fix from which any approach begins (your choice) and commence descent or descent and approach as close as possible to the estimated time of arrival as calculated from the filed or amended (with ATC) estimated. Hint, If you file an ETE that will be expired when you arrive, you never have to hold.
When the clearance limit is a fix from which an approach begins, commence descent or descent and approach as close as possible to the expect-further-clearance time if one has been received, or if one has not been received, as close as possible to the estimated time of arrival as calculated from the filed or amended (with ATC) estimated time en route.
Emergency - In an in-flight emergency requiring immediate action, the pilot in command may deviate from any rule of this part to the extent required to meet that emergency.