Black metal to me is an extremely broad genre so it’s really hard to say. Dissection are one of my favourites and are really easy to get into if you like melodeath. Behemoth are great too, I still consider them a black metal band despite their death metal influences. Beyond that Watain, Daemonheim, Immortal, Inquisition, Bathory, Darkthrone, Emperor, early Dimmu Borgir, some Mayhem, Carach Angren, Summoning, Agalloch, Enslaved, Ravencult, Saor, Satyricon, as well as many others that I’m sure I’m forgetting, are all great places to start.
But the best thing about black metal is just discovering other bands. Search up lightfox177 on youtube, I’ve found a lot of fantastic bands through them.