There’s no true alternative to cloudflare because cloudflare provides you with a ridiculous amount of nice things, many with generous free tiers.

Deflect has a 10 dollar minimum which is basically nothing, but at the same time, way more than cloudflare where basic protection is free.

Yes, I’m also a CF user for my personal and business domains. Not sure if I’m happy about it but then again I haven’t paid them a cent yet.