Seeking forgiveness for past online arguments that hurt others

Assalamu alaikum. I used to argue a lot online, sometimes using harsh words. I debated with anti-Muslims and even argued about pop culture and anime using many different accounts from 2020 to 2023. I've deleted some of those accounts and comments, but some are too many to remove, and I've been busy with studies and personal issues. I really want to leave that past behind and repent to Allah. I want to apologize to everyone I hurt, whether they were Muslims from other madhabs, Shia, Jews, Christians, or anyone else. I was too immature and overconfident back then. Now I just want to be a good person and a good Muslim. What should I do? Jazakum Allahu khairan.