Upgrade m2 nvme ssd to high speed and more storage

Hi All,

CAn i ask that my MSI GE72 6QF Apache pro can change the stock m2 nvme ssd (toshiba) to Samsung 960 evo to improve my laptop speed and get more storage

now my c drive is USED 85.1gb and free is 32.8gb

and also i feel that my laptop satrt up are more slower then new buy that time,it's take about 15sec to start up

Thank you!!!