Of course you can find them! They are not deleted. You cannot upload a NEW app or an update to one not targeting API 31 or newer
https://play.google.com/store/apps/details?id=org.melato.bus.android
Here is an extremely useful app for Athens' transportation system with no other similar, and I can't use it because "it is old". Last app update in 2014 with a target of 5.1 iirc
If we go to Games, we can find hundreds of great older games that we lost access to for no reason. And as I said before but you skipped it, we now lose access to ALL of our bought apps and games that stopped updating for whatever reason...
The battery life is the main reason I haven't upgraded my OG Galaxy Watch