DNS server With PI hole for android

i have installed PI hole or you can install it
i want to run my DNS on my android device
now any android device can use DNS
dns.google
dns.adguard.com
or cloudflare
same i want to make my DNS server its have to work on android device
like go to settings and serach DNS u can see privet DNS and u can set there ur own domain.
you have to make it for me.
you can test it on your server and give me for check if all ok project is yours and u can setup on my server.
dont ask me before for award.
you need to make it 1st if all ok then project is yours.
if its not work on android device then its useless.