Is there is any lemmy instance that does not require email and enable down votes?

Not requiring an email is going to increase the moderation workload on the admins since it will become a prime target for spammers and trolls, and if not adequately moderated the instance might get defederated from the major instances.

Feddit.nl
Downside: People will assume you're dutch. But as far as assumed nationalities go, the Dutch are pretty alright.

EDIT: Disregard, they seem to require email nowadays.

Lemmynsfw.com

I wish

yes, we do that