Find a well-connected merchant that sells for #bitcoin over lightning something you like and regularly purchase, e.g. coffee, tea, beer, etc. Open a channel with them and fund with a few months worth of purchases, like €400. After a few purchases of coffee/beer/tea/whatever, you now have inbound liquidity back from the well-connected merchant.
Discussion
Good advise.
Find partners who have an economic incentive to have an ongoing open chanel with you.