I use one well connected channel. You can use 1ML to see the which nodes are the most connected, and get their connection into.
https://1ml.com
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Also, if you're using Alby/Alby-hub, you may have to re-login to things working again.
There use to be a nostr community where noderunners would open channels with each other. That could be a less expensive option for you, as well.