I really should've created a devRant account with a different username than my Twitter. Didn't know I couldn't change it later :/ (If I can please tell me how)

Website or app?

In the app: Settings -> Edit username or email

@systemctl Oh wow I didn't know I could do it on the app! Thanks!

More thorough solution: delete the Shitter account. Same for Instacrap and Fuckbook.

1. Click on Settings and privacy from your profile icon dropdown menu.

2. Under Account, update the username currently listed in the Username field. If the username is taken, you'll be prompted to choose another one.

3. Click the Save changes button.

That's for changing the Twitter username of course...