Leave it to thaw for a couple days in a cool dry place. If it turns on great but you’re on a clock with a timer set to who knows what so you’ll want to be quick about backing it up

You’ve got 2 culprits here:

A. The discs B. The laser (the thing that reads the discs)

If you’re saying there’s issues with 3 separate games then the probability is it’s your laser. You could try a couple more discs to be on the safe side if you wish. Thankfully the laser is replaceable.

The first thing I would try though (apart from a couple new discs) is cleaning the laser head with an alcohol wipe and just see if that makes a difference :)

When you say “stop at the end of the loading screen” what do you mean sorry? It sounds like a bad disc that’s all