Project for socks5 proxy on android phone . VPN expert needed

I have an android phone and am planning to use socks5 proxy on it …
The problem am having is that not all traffic are going threw the proxy

I have somthing called DNS leak when using applications from the app store such socksdroid and tun2tap . witch is bad for browsing .

The only way the socks proxy works is by using firefox and foxyproxy . but i dont want to use firefox and foxyproxy . i want to use any other browser like google or opera using this socks …

I heard that the only way to send all traffic threw socks5 proxy on android is by setting up a vpn with that specific socks ip .. somthing like proxyguys.com . Where they use l2tp to connect to socks proxy .
and starvpn.com that also have somthing similar with openvpn .

now i know it works with vpn but i have no clew how to setup that .

If there is other solutions using redsocks or vps server i have no problem with that but i dont think so .
I think the only solution is to have somthing similar to proxyguys.com and starvpn.com

good day please apply only if you have a big experience in networking and vpn .