There should be a way to select multiple messages in text channels.

In servers, deleting messages you sent on a channel take a long time, sometimes a general server gets off topic and deleting messages one by one take forever. Not only channel moderators should have this feature, yesterday i got off topic on a channel and for keeping cohesion i and my friends who where talking with me deleted our messages, but it took a LONG time, i was on pc and it took a few minutes, but my friend on mobile eventually gave up and asked for a mod to delete  them.

Making it short, deleting messages one by one takes waaay too long. Also would be nice to be able to delete messages in a chat, even if only deleting for yourself.