You need a paid (meaning: pay-to-write) relay for others to easily see you. The small payment acts as a spam filter.

Most users (myself included) ignore content on free relays unless we explicitly follow the person first.

Relays are listed on: https://relay.exchange

If you want a recommendation, nostr.wine is good because it comes with two relays, the second being an aggregator and filter of popular free relays to kill the spam. The nostr.land relays are also very popular.

You'll need some sats in a Lightning wallet to pay.

You can add as many paid relays as you like without paying (pay to write; free to read). So pay for 1 or 2, but add 8 to 10, and remove all of the free relays from your client.

That will get you into the “real” nostr. A bit of friction to set up, but very worth it once inside. Huge signal with very little noise. I think you will see a lot of engagement, probably more than on Twitter.