You should do your own offer with LN+ with a low entry-barrier (not existing). Yes, you fill find other nodes wjth low channels and liquidity, but growing need a starting point.
You can also buy liquidity with lnbig, amboss'magma or lightning labs'pool. With the last two you buy liquiditu from other users
If you want a profitable node, the truth is just build a routing node without a massive amount ot bitcoin is not enough: it should provide some kind of service (lndhub for example, being used for process payment, etc)
