I actually do have an M1 Garand.
It’s reliable.
The problems that arise with the Garand fill a book. My shop manual for the Garand must be three hundred pages.
The shop manual I have for the AR usually covers the problem with the front sight getting loose. A set screw from the bottom solves that. The rest of the book covers complete disassembly and reloading.
I have more Garands than I have AR’s. The Garand is a nice museum piece that is fun but horribly expensive to shoot. It’s close to impossible to mount a scope. The rear sight eventually wears. The operating rod will bend after time. The gas tube loosens on the barrel. The bullet guide bends and prematurely ejects the clip. They don’t hold their accuracy after time.
Have fun with your Garand but it’s time has passed.