Ignoring the lack of updates if the game is buggy, games back then were also more focused on quality and make gamers replay the game with unlockable features based on skills, not money. I can't count the number of times I played Metal Gear Solid games over and over to unlock new features playing the hardest difficulty and with handicap features, and also to find Easter eggs. Speaking of Easter eggs, you'd lose a number of hours exploring every nook and cranny finding them!
Skill issue on your part, you got duped by pretty lights. Super Mario is to this day playable. Megaman X is still one of the thightest platformer games ever made, the controls nearly feel like they read your mind.
Also notice how the few games that are better than these classics were either made by the same people (Igarashi's "Bloodstained" reboot of Castlevania) or were HEAVILY inspired by them (Hollow Knight, Shovel Knight, 30XX etc)
How on earth could you conclude from my post anything about my gaming skill?