Thanks Guys, it seems my posts above where i quoted those that helped, didnt work, so apologies for any confusion.
Thanks for all the help. when i bought the m.2 drive a few years back, the PCIE ones were quite a bit more than the sata m.2. the reviews showing the actual speed differences in boot times didnt seem enough to warrant the extra outlay, so i went Sata. Its fast enough for me for sure. Although the price differences are much smaller now, if i replaced the existing m.2 for a fast 1tb or 2tb, i'd have no use for the existing drive, as i have only one slot. Plus its a right faff to get to as its on the bottom of an ITX board if i remember correctly. i've installed a 250GB 2.5" SSD which ive installed Warzone and CS:GO on, and its fast enough for me. i'll get a bigger SSD of the recommendations above when i see an offer on and clone it across.
Cheers guys.
now i need to research headsets (ive never done "online gaming" before)