FOSS Social Media Management Software

I’m looking for software that can be used (or possibly adapted) as a nexus to push content to services like Gab, Gettr, Rumble, Odysee, Telegram channels.
Do you know of any software like this? It’s getting very hard to search for alternative platforms and FOSS with search engines

I feel like if that was available then EVERY PODCASTER known to man, would be using it, and I wouldn’t constantly hear them lamenting such costs because. as far as I know that is a SERVICE (for $$) rendered, rather than software than can be installed.

But I could be wrong as heck too. Have you tried searching in FOSS site search engines rather than WEB-wide engines? Like GitHub for example