AlbyHub does support several backends (LND, CLN, BreezSDK, Greenlight, Cashu etc) - but it also come with its own embedded node (using LDK), which is the easiest nntaleb way to start for fresh users. Just deposit on-chain funds, press Open channel and off you go. Or alternatively, purchase an incoming channel from an LSP
Yes. But you are still not fully immune to force closes; these are part of the LN network and if your channel wants to FC on you, they can - no matter which node you have. But the recommended channel peers in AlbyHub tend to be pretty good in that regard.