Hi, is there a way to play a fabric mod and play a forge mod at the same time?
Yes, it works, but you have to see if the mod is compatible with the fabric mod!
Here again to see
He has now used Optifine, but works the same with any other mod (as long as it is compatible)!
At the moment you can only use Fabric or Forge. Some mods are programmed in such a way that they can also run with Fabric, e.g. OptiFine with the OptiFabric add-on, as shown in the video - which OlafFackel2000 has linked.
A patcher that allows you to patch mods to run on Fabric is in progress.
More information: https://patchworkmc.net/