u/RefrigeratorHot3389

I used to download apks or mods for apps that I liked or hid away apps and could change my lock screen password but now I can't do any of that because when I try it gives me a pop up screen asking me for a pin code I never put in I tried the 0000 and 1234 but nothing worked so I'm kinda stressed rn if there's a way for me to know where this pin code came from and how I can know the password please