You could use Adguard. It has a Deep Packet Inspection protection feature, though they claim it doesn’t work in all cases. Or, you could use a VPN like ProtonVPN and I assume you’d be able to set your own DNS then because it would all be tunneled and encrypted anyway, right? Have you tried Cloudflare’s DNS over HTTPS? It’s encrypted. How would the ISP know what it is?
You could use Adguard. It has a Deep Packet Inspection protection feature, though they claim it doesn’t work in all cases. Or, you could use a VPN like ProtonVPN and I assume you’d be able to set your own DNS then because it would all be tunneled and encrypted anyway, right? Have you tried Cloudflare’s DNS over HTTPS? It’s encrypted. How would the ISP know what it is?