I am kinda fishing.. Not demanding much, it takes like one minute for an experienced user to help out 
I'm not a little fellow for asking on how to set this up right.. im no coder, i'm kinda some regular computer user..
I kinda know how to set this up. Perhaps.. After i install it i can just activate it and change this:
# Configure DoH provider
while uci -q delete https-dns-proxy.@https-dns-proxy[0]; do :; done
uci set https-dns-proxy.dns="https-dns-proxy"
uci set https-dns-proxy.dns.bootstrap_dns="8.8.8.8,8.8.4.4"
uci set https-dns-proxy.dns.resolver_url="https://dns.google/dns-query"
uci set https-dns-proxy.dns.listen_addr="127.0.0.1"
uci set https-dns-proxy.dns.listen_port="5053"
uci commit https-dns-proxy
/etc/init.d/https-dns-proxy restart
to this:
# Configure DoH provider
while uci -q delete https-dns-proxy.@https-dns-proxy[0]; do :; done
uci set https-dns-proxy.dns="https-dns-proxy"
uci set https-dns-proxy.dns.bootstrap_dns="D.N.S.1IP,D.N.S.2IP"
uci set https-dns-proxy.dns.resolver_url="https://dns.google/dns-query" (It's this part, i don't know how to convert the URL... Or if i need an URL even? What do i write here?)
uci set https-dns-proxy.dns.listen_addr="127.0.0.1"
uci set https-dns-proxy.dns.listen_port="5053"
uci commit https-dns-proxy
/etc/init.d/https-dns-proxy restart
(I can probably just leave the rest...)
I can fix the rest.. So some hints or some step-by-step guide? Thanks