Sorry for bothering.
Don't apologize for asking good questions about LN. I will help you with all I can, no worry.
I only have 2.9 M sats on the node
  1. If those are all your sats ever, you should not use them all for a node. Is good to use no more than 30-40% of all your BTC for a node liquidity (if you run a routing node).
  2. Not having a good amount of sats dedicated to run a routing node, will have bad consequences, for you and for the rest of the network.
  3. There are 2 types of nodes: public routing nodes and private / non-routing nodes.
Public routing nodes needs a lot of liquidity in order to have a good flow. At least 20-30 channels with min 5M /each channel. Otherwise is just a pain and you will achieve almost nothing. These nodes are named "public" because anybody can connect and open channels with them and route all others payments. And charge a fee for each tx.
Private / non-routing nodes, needs less amount of liquidity, only the amount you need for your personal use, your own payments through LN. With 2-3-4 channels of 1M each you have enough to do your txs and you don't need to open public channel, you can use only private (unannounced / not visible in the LN graph). These private channels are NOT routing others payments, only yours! But you will still need to open inbound and outbound channels in order to be able to send and receive. For these private nodes I would suggest to use mobile nodes like Blixt, OBW, Breez, Phoenix, Electrum. Is more than enough for personal use.
Read more in my dedicated guides:
So I'll need at least 1 ₿ to run a public routing node. At least 20 channels x 5M 丰 = 100M 丰 = 1 ₿
Maybe in a few years I can afford a public node. What do you recommend me to do with my tiny node?
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No worry, not everybody have to run a public routing node. You can still use your node for:
  • running the bitcoin core to validate and broadcast your own onchain txs, using Electrum server for all other SPV wallets you use (Electrum, Sparrow, Specter, mobile wallets that need a core /SPV/neutrino node).
  • still can run some private channels with your LN node, only for private use. In time you can expand little by little with more public channels. You don't have to open in just one day all those 20 channels. You can open one per month for example. Wherever you have enough sats.
  • learn more about running a LN node, install some more apps like btcpay and LNbits, play around. But keep in mind its reduced capabilities.
Remember: don't use all your sats you have in your node. No, there's no risk to lose them. In LN channels there's no way to lose them, only if you lose your node keys. But is good to split your BTC stash in 3 parts: hodl, cache, spending.
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I'll play around while I stack more sats. Thanks master!!
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