I got my 3080 by subbing to almost every Twitter and Discord stock tracking bot in existence and ensured I enabled notifications on my phone for all of them. Then kept my phone on me at all times and as soon as I heard the notification tone I'd be straight on the case, clicking the link within a couple of seconds and just doing it straight from my phone. Also made sure I was already logged in to the various shopping sites with the browser, past CAPTCHAs, my payment details added etc, to prevent any further delay. Although apparently PayPal or Apple Pay is your safest bet on most sites if you want to reserve your stock as quickly as possible.
There are many PS5 tracking bots too. That said I'm in the UK, not sure what trackers are available elsewhere, and if my memory serves me correctly you're in Norway? But I could be getting you confused with someone else back in the day lol, apologies if so