You can check out https://lightningnetwork.plus and do swaps too, or buy channels on magma from Amboss if you need inbound.
Here is the deal:
You provide me with channels for stress testing my node build and I provide you with zero fee routing.
If you have Sats lying on you node, please connect.
https://amboss.space/node/037786d2e1202fdd3ead556459d769381913952efb22f1da036a376104b6082979
Discussion
Been there done that. I am testing a new scalable custom node build. I need a lot if channels and routing activity for stresstesting.