I used to play exactly like you do. Even if a good initial gear roll bad I will just get salty and extract/sell/use as upgrade mats, all while praying to one day get that 1 perfect gear. So my gear progression for the first 2 years I is slow like turtle. I have tons of units not geared, tons of units I 6 stars and sitting there gathering dust until they either fall of the meta or forgotten. But after I actually gain more knowledge and researching more character builds I now able to see certain usage on subpar rolled gears. Then I went from having <10 units geared to now having 30+ units that is suboptimal but still usable state in either pvp or pve.

My take on this is not to become a 'perfectionist' but an 'opportunitist' when building characters and rolling. Personally I feel like having 30+ characters built allows for a wider range of playstyles, be it turn1 cleave or 2nd turn control etc. Once u unlock different playstyles u can actually (somewhat) enjoy the different joys of the game instead of arrogantly stick to only chasing 1 type. Plus with the addtion of mod gems/epiccraft/ease of hunts/free gears/craftingevent/more molagoras, you can (again somewhat) built a lot of characters without much issue.

Yes Rngesus still there. But, if you're not aiming to be at top of pvp then why stress over gear quality?