Which one of those has the lowest fees? (sometimes it is hard to find since they have a "hidden" fee with a crappy exchange rate)
1. Robotsats - http://robosats6tkf3eva7x2voqso3a5wcorsnw34jveyxfqi2fu7oyheasid.onion/
2. Sideshift - https://sideshift.ai (But they could ask for KYC at any time, though not always)
3. Coinswap - https://coinswap.click/
4. Boltz exchange - https://boltz.exchange/ (Only possible to exchange BTC LN and BTC)
What makes you hodl BTC lightning or not try to convert it into Bitcoin? There are also better options instead of Litecoin.
if you need Swapping then use DEXs