What are good PC programs for Twitter (video) edits?

So you know all these edits on Twitter in which videos of certain artists / actors / just celebrities are generally mixed together with music and effects.

Since I'm bored, I wanted to try that too, but the programs I've tried so far either only save the videos in formats that Twitter does not support or are simply unnecessarily complicated.

Have a Microsoft Surface Pro 7 laptop in case you need the info, unfortunately I can't use my cell phone because it is incredibly slow and often lags.

Should something be free, what do you use there?

You can easily convert files to other formats. Sometimes, instead of saving, it is sufficient to press export in the program.