I had to fiddle with my own on my old laptop, I used one of the plethora of github scripts, but then they changed the api to limit access to (I think) about 100/min, so I just changed the delays to 1000ms so it would only delete 60/min.
Took two weeks, but I still haven’t seen any old content pop back up outside of archives and quotes from other comments in the thread.
I search for a couple random things I remember saying on ddg/bing/Google whenever I think about it, so far nothing.
As I’ve said before about certain countries, you know your platform is doing well when you (essentially) tell people “No, sorry, you can’t leave.”