Use ViolentMonkey/GreaseMonkey scripts in Firefox.
It will rewrite your comments with gibberish, and then delete.
Completely free.
I still use RedReader on occasion on mobile, and then every few days turn the script on from my PC, and repeat as needed
Gingerlegs@lemmy.world 1 year ago
Redact. I will say, I was on there over 11 years and it took almost 2 hours for it to wipe my comments