Iris doesn't work for 1.21.4 Forge

Hello, I have installed Iris as Optifine would just straight up crash my game.

Good news: Iris doesn't crash my game
Bad news: It's like Iris doesn't exist in game... I have the file both in the mod folder AND the curseforge folder in their launcher. However it's not there when I launch the game.

Info: I have downloaded a 1.21.4 forge version to use, I have downloaded the 'Neoforge' version as it's the only one available for 1.21.4 that I can use for my mod pack.

CLEARLY, it's NOT working with it.

I have also used version 1.21.5 AND 1.21.1 neoforge just to make sure it doesn't work.

Is there something I'm missing? I tried to also add sodium but this issue persisted, (from what I gathered it wouldn't have changed anything as sodium is already included with Iris.)
Screenshot_2025-05-03_192200.png
Solution
Forge has never and will never be supported. Use neoforge or fabric
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