How do you manage posting video content across multiple platforms?

I’m curious how people here handle the workflow of posting video content to multiple platforms.

When I was running several YouTube and TikTok accounts I always found the process really slow. One video meant uploading separately to TikTok, Instagram, Facebook and YouTube and scheduling everything individually.

Because of that I spent the last ~14 months building a tool that tries to simplify this workflow.

I'm mainly curious how other people here approach this problem.

Manual uploads everywhere or do you use tools for this?