Welcome to the "find out" step of the patented two step FAFO plan.
Clear your cookies. VPN, different/privacy focused browser to mask your device ID. You could also try dual booting or using a VM to mask your device. Don't use the same email address, same IP, same browser, or appearance of same device or they'll flag it instantly. Don't use a remotely similar username.
But seriously? Considering buying a new computer for reddit? Better to take this as a very clear sign that you're addicted. No website is worth that.
If you can't figure this shit out yourself through searching online, there's a near zero percent chance that you won't fuck something up and just get perma'd again anyway.