Maybe some automation would be a help to you:
There's a tool called 'PostyBirb' that was designed to help with uploading to multiple sites at once. I haven't used it myself, but some artists 'do' use it.
Also: Have you tried Mastodon? It's less popular than Twitter/"X", but reportedly it's very good for getting in touch with other artists. Also a lot less right-wing...
beanvamp
the only thing i'd say is don’t get overwhelmed with all these accounts on different platforms
ScrapyardSatyr
I've been overwhelmed for quite some time. Which is why I'm trying to narrow down which ones to focus on.