If you are worried about your ISP injecting/hijacking your DNS, then you should also use DNS over HTTPS. Some ISPs I think hijack all DNS requests irrespective

If you are worried about your ISP injecting/hijacking your DNS, then you should also use DNS over HTTPS. Some ISPs I think hijack all DNS requests irrespective of the destination and point it to their own. Sky used to do this from what I read. Setup DNSCryptProxy is my suggestion and let it pick the best/fastest/closest DNS over HTTPs resolver.