Yeah, It's a "rookie" mistake, buying a PSU for your current needs. A good PSU can last 7-10 years if taken care of, so might aswell spend extra money on it and buy extra watts. The extra watts also eliminates coilwhine in most cases and your good for atleast 2-3 GPU upgrades. My PSU has gone thru a 1080 ti, 2080 ti (current) and is good for a 3080 ti / 3090 ti (to expensive at the moment). After that I need a new PSU, so really got value for my money. I highly recommend Corsair PSU's. Modular, 80+ Gold certified, semi-passive and 5-10 year warranty (depending on the model). Semi-passive PSU's kill the fan when the watts are abit over your current needs (doesn't need to be cooled then), so hardly any dust get sucked in. I also aim at being over 150 - 200 watts over GPU need, but won't happen with a 3090 ti, so might change PSU, when upgrading. For a 3090 ti 850w 80+ is enough, but might switch to 1000w if upgrading when the price is right. Still got 4 1/2 years of warranty left aswell.
Again, sorry since this is off-topic, so won't reply or write anything more about it. Peace