Villager Brute seem to have replaced Iron Golem's Attribute (I think so) and made both of them can't deal any damage when in a fight.. I have tried changing Iron Golem's physical damage for it but nothing seems to change. Even when I remove Villager Brute, the problem still remain. Are there any solutions for this ?
https://www.curseforge.com/minecraft/mc-mods/villager-brute

Whatever this mod is doesn't have its source code open so I can't tell.

I've just discovered something worse, almost all entities can't deal damage to each other, they can only deal damage when accidentally crit or use special attacks. Additionally, they still deal accompanying effects but no damage counts. Players are completely normal and can deal damage to them.

If so, do you think me changing the parameters of the Iron Golem will make it work normally again? Iron golem remains the same and nothing has changed since I deleted Villager Brute.

I'm really not sure. That would probably be a good start, but I'd also make sure you're using a new iron golem entity and not one from before you removed the mod.

yes, I'm using the new iron golem in a new world. If it not changing at all, this is worth alarming

I know it's quite late to post but luckily I have found a workaround on this. I deleted IDF and related files from Modpack, then downloaded a new version and everything went back to normal. I can't believe I struggled for 2 days on this issue, although I am not sure if Villager Brute is the cause but I think I will not use it anymore. Plus, the fact that Iron Golem can't deal damage to Slime is what I find most ridiculous. It's already there, isn't it?

Slimes are immune to strike damage by default. Iron Golems deal strike damage. You're welcome to change this if you like.

Okay, the kinetic energy feature from Furti_two's Dynamo is the main issue causing the problems above. It's comforting to finally find it. Hope this discovery can help you.

I will look into it.

EDIT:
Unfortunately, I will not be adding explicit support for MCreator mods. I do not support the use of this program to create mods, and I would recommend not using them.

thank you for your reply.