Blizzard recently stressed that using any mods in Diablo IV is forbidden. All mods, no matter how benign their effects, are treated the same as cheating, and...
Blizzard says that modding Diablo IV can result in a permanent account ban::undefined
You can still try the earlier Diablo games. Diablo 1 with Belzebub mod is pretty fun (or get DevilutionX if you want a more authentic experience but with some modern QoL stuff), Diablo 2 with Project Diablo 2 mod is even more fun (probably the best Diablo variant IMO), and there’s also Blizzard’s official Diablo 2 Resurrected, if you can’t tolerate old school graphics.
You can still try the earlier Diablo games. Diablo 1 with Belzebub mod is pretty fun (or get DevilutionX if you want a more authentic experience but with some modern QoL stuff), Diablo 2 with Project Diablo 2 mod is even more fun (probably the best Diablo variant IMO), and there’s also Blizzard’s official Diablo 2 Resurrected, if you can’t tolerate old school graphics.