Make it a habit to delete your account from applications before uninstalling them from your phone
If you stopped using app or website make it a habit to delete your account from their platform before leaving, will let you avoid a lot of spam, security risks and privacy concerns.
Obviously if they are trying to take your money or being abusive then run don't walk away, but long term friendships go through changes just like any relationship. Life happens.
It's hard to maintain friendship with someone who spends the first 5 minutes of contact scolding me for not calling more.
On the other hand, my best long time friendship is so chill. We can go a year without talking and still just pickup where we left off. The only way to have a lifelong friend is to stay friends.