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Patches what are those, I've heard of them a lot but never saw them only mods.

Mods use the in-game mod system; patches use manual file replacement. In this regards, Aric's mod is somewhat of a hybrid. Redle often does patches instead of mods for UI changes. I have a bugfix and improvements patch, which is released on the Strive Discord, though Leo's mod hosts a slightly older version of my patch for his mod.

And where do you get this patches because when I checked the discord I only could find the mentioning of it.

It would have been faster to ask on Discord, but if you use the Discord search bar to find "change log" it should be easy to locate.