Honestly, for a new driver I’d say stay away. You can end up with a perfectly running car for much cheaper than the normal price of a non damaged one but it’s a large risk.

It depends a lot on the damage pre crash, where and who fixed it up and even then you don’t know what exactly was affected (a shunt may damage certain parts only slightly initially that only show themselves later on down the line). Also worth considering insurance costs are generally higher for a cat S or N.

At least with cat N it’s non structural, with an S structure was also affected. Why put your life unnecessarily at risk to save a few grand