For the 2nd point, maybe start reading this: https://darthcoin.substack.com/p/bitcoin-ln-wallet-how-to-fund-it and follow the rabbit hole in those guides.

Open private channels to avoid closed, if you can, with noderunner you know or a big router node.

nikotsla

lightning

I want to open a lightning channel and I have some questions, so I'd appreciate your help. Are these the right steps?

1. Download the non-custodial wallet with node management.
2. Send Bitcoin to the wallet by mainnet. 
     -  Is it possible to fund the wallet via another lightning wallet? If so, does it need to be a mainnet transaction?
3. Open a channel. 
    - When opening a channel, how do I choose who to open it with? In order to reduce the chance of the channel being closed.