Are there any privacy benefits to hosting a DNS server on a VPS that you can then use as your DNS server on your mobile devices?

My thoughts are that it would bypass using your telecom’s dns or Google/Apple or even your VPNs DNS. In addition you can set it up to block trackers and ads, which is often hard to block natively on a phone system-wide.

To take it a step further, you could run the VPS through a paid VPN in addition to using it as a DNS.

What do you think? Has anybody tried this before and if so, got any tips?