Hi so recently I'm experiencing this bug where if I have my mods folder, the game crashes without absolute reason, at first it didn't turn on at all, so I removed EUP Badges and seemed to fix the starting issue, however then it started crashing in loading screen and I'm now unsure what's happening.

Issues with the mods folder can be super frustrating because sometimes it can be hard to find exactly what the root cause of the issue is but I'll give you a couple of steps to try:
First I would make sure you have a modified game config, heap limit adjuster, and pack file limit adjuster
https://www.gta5-mods.com/misc/gta-5-gameconfig-300-cars
https://www.gta5-mods.com/tools/heapadjuster
https://www.gta5-mods.com/tools/packfile-limit-adjuster
These will help prevent crashing when you're using addons.
If those don't solve your issue you may have to start reverting changes you've made in your mods folder until it works
This can be uninstalling the last things you added or reverting any changes you made to meta files
Unfortunately if you can't find the issue you will have to just start from scratch and make a new mods folder because there is no way for someone to tell you what it is in your mods folder that is causing the game to crash.