You can set DoH in all major browsers in desktop. On iOS, you can use private relay.

One issue is, if you set DoH in the browser, you can not do DNS filtering in your dns server. It might be better to send DNS over VPN to your home lan, do the filtering there, and let your dns server send the dns over https.

Tailscale can send DNS from all devices to a server of your choice. From there, AdGaurd or Pihole will filter it and send it over https.