Strike app is a good way to get Bitcoin for Fiat and then you can send it on chain or via lightning invoice. I use it to boost liquidity and/or add on chain.

You can also send lightning sats to Strike and then send on chain. My favorite thing is that Strike will batch transactions on chain and offer to send with no fee if you are not in a hurry. Great when Mempool fees are high.

Here's an invite link to get $5 USD

Strike is AML/KYC but How it works is that it connects to your bank or debit card for funding so the bank/credit union handles the AML/KYC and it's done.

You can also buy Fiat with Bitcoin and you can send that Fiat to other Strike users. Finally you get a lightning easy address to get zapped. E.g. ogfomk@strike.me