Basically my friend made an idle anim and uploaded it to Roblox and made it default using a script, and when you Play it in Roblox Studio the anim is working for him but not for me, is there a way to fix this issue without creating a group
instead of uploading the animations you can use KeyFrameSequenceProvider to register a temporary animation that acts as if it has been uploaded. You can now make a script that registers animations and automatically replaces the ids in the animation instances. Do note that this only works in studio though.