No worries! I've just gone with the default 2.0.12 version of Lazarus, and it appears to run perfectly my macOS 12.01 Monterey system, presumably using Rosetta.
I must say it's a joy to set up now, four years after my first fumblings with Lazarus. Everything runs in Cocoa now, and a pleasant IDE is as simple as installing the AnchorDocking packages, and choosing a nice font. Happy days 😃