is there any way to purposefully block certain sites for myself, on android?

i've been using my lil brother's phone for a while because mine broke, and it had this block on it that didn't let it load pages or search results with +18 words on it or even boards like /b/ even though the rest of 4chin worked just fine

i liked it but i don't wanna use google's parental control thing because i also wanna know/check what was blocked
(like i don't wanna find out 10 years too late that my mom/gf/sister had an onlyfans because i didn't see it in the search results or whatever)