Colluding miner attacks - miners have power to decide which transactions they want to include in the block so they can refuse certain transactions selected by an attacker. This attack is very unlikely to happen due to high cost and complexity (all miners would have to cooperate).
You have to trust miners.
If ALL miners decided to cooperate with a single person then you would have to be more concerned about 51% attack. It won't happen since it would scare future investors and users. Miners would lose money long-term.
The same applies to the current Bitcoin network, without Lightning Network. If all miners decide to reject transactions from a certain address, they break the one thing that makes Bitcoin so great, and severely treaten the value of their investment.