That’s a question I had and maybe you can answer!
Does someone need inbound capacity to receive lightning sats? Like, if I want to receive 1000 I must also provide those 1000 sats in the channel?
Discussion
yes, you need inbound liquidity in order to be sent sats through your lightning channels
so when you establish a channel it’s usually 100% outbound capacity, so you can send those sats OUT from that channel
as you spend, and send those sats OUT, they then become inbound capacity (and can be sent back IN your direction)
but there are some services like Loop and Boltz where you can “switch” your outbound capacity to inbound
i think you essentially send your sats to some lightning address (giving you inbound capacity), and then they send you those sats (minus some fee) back to some on-chain address
unsure exactly how this allllll works (i’m still figuring it out), but it should be roughly correct
Look into LNBig or amboss.space
These are places where you can buy inbound liquidity. Otherwise you can use the loop out method another commenter mentioned. Whichever is cheaper right?