LaCie External Drives

These are supposedly Mac compatible and even Apple sells them on the website. I don't know why. They don't seem very compatible.

First problem: A thunderbolt connector is not provided.

Second and biggest problem: I backed up three times with Time Machine -- My 1T LaCie drive supposedly ran out of space. I reformatted it as recommended on a Mac support website and the drive disappeared entirely.

I have sent a request off to LaCie Support. But clearly this is not Mac compatible.

Can anyone recommend a MacBook (M1) compatible external drive that works reliably?

Thanks,

Beth from Ottawa