So I use Forge, and I use Hypixel SkyBlock mods. But recently after getting exposed to the Create mod, I can't seem to find a way to seperate my 1.18.2 mods from my 1.8.9 mods. Do I just put them all in one folder, or do I need another mod folder? If so, how?
You can't have all those mods in one folder. The easiest way would be to just create another instance (a completely new .minecraft folder). Obviously, call it like ".minecraft_1.8" or something. You can change the startup directory for the Forge profile by clicking "Browse" in the launcher:
Then, just put all your 1.8 mods into a mods folder in the .minecraft_1.8 folder