Modrinth (easiest)
If you don’t feel like digging through folders, use Modrinth or CurseForge. Either works.
- Install the Modrinth App (or CurseForge, if you already use that).
- Make a 1.21.1 profile with the Fabric loader.
- Hit “Add Mods”, search Cobblemon, install 1.7.3.
- Worth adding Sodium and Lithium while you’re there. Optional but your FPS will thank you.
- Launch the profile.