I've had this problem for a long while now, and am just now remembering that Forge has a forum site. I feel dumb that I could've had this problem solved sooner.
Though it is a problem I've only experienced as of 1.20(to my memory). Everything prior to that version worked fine up until I installed Forge 1.20.
Anyway, I've tried some things including trying previous versions and (at the recommendation of others)taking my resource pack off.
Paste.ee link lol
Running Minecraft version 1.12 is the version of Forge that works without issues.
I've deduced that this is because the overlay that loads the game and mods in future versions of Forge is not present, but this still doesn't solve my problem of how to fix the crashing of said future versions, or why it crashes in the first place.
Yes, this happens even without mods.
I'm not very good at messing with files, so here I am.
Hopefully I did this right after looking at the FAQ.