is there a way to make the drop rate in the chest loot table a lot lower for these? in my server someone became super OP in like an hour because he found so many 😂

If you are on any version +1.20 you must use a DataPack. Except if you are on Fabric, in which case you cannot.

If you don't know how to make the DataPack, you can find them for the moment on Discord in the FAQ channel.