Mods wont run

[ziraqml6]

I installed mods, it ran normally before, then I tried to play multiplayer, so I used no modes. Changed my playsets again, but it wont work again for some reason. Help pls

[Deusmodeus]

Are they mods meant for version 1.20, that came out recently? or are they for the old 1.19?

[Comrade Burrito]

Don't do mods, kids. Stay vanilla, stay safe.

[ziraqml6]

the 1.20 one

[Deusmodeus]

review the mods, make sure they are for 1.20.
check if they have any requirements and that the mod order is correct. some mods have to be loaded before or after others.