Lightning network channels are secured by the same miners since it’s just users exchanging signed bitcoin transactions out of band. At any point either party in the channel can broadcast the latest transaction and settle on chain. Up until that point it’s the same cryptography that secures all the other UTXOs.
You can run a lightning node from home on top of your standard bitcoin node so you don’t have to share control any more than you do for the base chain.
For what it’s worth I agree that lightning isn’t ideal especially for beginners but I use it all the time and it mostly works fine. Had my fair share of frustrations with it too.
