I would advise against using unbound on the client side as this way all your DNS queries will be unencrypted and visible to your ISP. Besides that, the DNS responses can be modified, this kind of censorship is very popular and used in many countries.

IMO it is safer to use a big popular DNS recursor (google, cloudflare, adguard, quad9, etc), use DoT/DoH/DoQ and maybe add some additional filtering on top of it.