Use any of the following:

• DuckDuckGo Lite.

• Stract.

• Alexandria.

• Clew.

• Peeker.

• Mwmbl.

• Search my site.

• Marginalia.

• Wiby.

Exactly.

I am talking about any public Lemmy server.

What do you mean?

You can’t force people to be positive, they might still leave negative comments.

Lemmy is still small, so users don’t have the option to choose servers as they please. For instance, I’m looking for an instance where you don’t need an email to register (for privacy reasons) and where you can quickly create an account (I don’t have the patience to wait for days to get my account). Also, it should have a good number of federated servers working with it.

With these specific requirements, there are only a few servers available.

Downvotes discourage reposts more than anything.

I would downvote this comment also if I could, but sadly my instance disable downvotes. (◕‿◕)

How about this: you can choose whether you want to disable downvotes in your Lemmy client, and everyone can live happily ever after.