If you're only gonna do 1, I recommend wss://nostr.wine but there's several others you could consider....
wss://paid.spore.ws - 420⚡
wss://relay.nostriches.org - 421⚡
wss://bitcoiner.social - 1000⚡
wss://relay.stonez.me - 1000⚡️
wss://nostr.milou.lol - 1000⚡️
wss://nostrsatva.net - 15...