You could just disable the pi-hole dns server in your routers DHCP server (so it will not be used by all network devices by default.)

Then, only on your own phone/laptop/etc, manually configure your pi-hole as the DNS server for the corresponding home Wifi network. So only the devices you manually configure will use the pi-hole.

Also, you can create a shortcut on your phones homescreen to disable pi-hole for x minutes by just a single click (without having to log in.) see: https://discourse.pi-hole.net/t/is-there-an-api-command-to-d...

Another idea might be to remove all blocklists in pi-hole, and only add this list: https://github.com/StevenBlack/hosts