My new laptop keeps randomly freezing for a few seconds during normal use
That sounds rough a laptop freezing like that can really wreck your day when you are trying to work.
In my experience a similar freeze showed up after a big update and a flood of background apps I fixed it with a clean boot and memory check.
If you want a quick move try a clean boot and monitor temps and disk activity to see what spikes.
If it keeps happening you may need a professional check to rule out hardware or driver faults and avoid data loss.