I went on to put in my password but it said incorrect

I use an iPhone X that was previously used by my dad. I changed the apple ID on the phone and everything was fine until today when i went to the app store to update a few apps and it asked me to log in there when i clicked “update” even though i was already logged in to apps store with my own apple ID. I went on to put in my password but it said incorrect every time and it didn’t show my apple ID, it only had the option to put in my password. Then i clicked “forgot my password” and noticed the apple ID was different there. Then i looked to change the apple ID but there was no option. I tried restarting my phone and then tried to update the app again but they still ask me to login there with only the option to provide my password but not the apple ID. I don’t get why they’re asking me to login there as i’m already logged in with my icloud. Furthermore, why is it only asking for the password and then when i noticed it was the wrong apple ID they were asking the password for, there’s no option for me to change the apple ID, what should i do now?

[Edited by Moderator]