domain registrar recommendation?

I’ve been using Namecheap for years. Cloudflare and PorkBun are other popular choices.

I use Porkbun, but this is largely because I like the little cartoon pig, and I'm familiar with the UI.

Generally you should just check for the best deal for the particular domain, and then remove any particularly terrible providers from the results.

if you don't mind pay a bit more, then i highly recommend name.com they have been in the business since ages.