Bruh, you're silver 4. Odds are, you didn't know how to play him to begin with. (Don't take it too hard, it's just a joke ;) )
To be honest, the most successful yasuo's I've seen are the ones that build enough to get full crit, maybe a BT or Mercurial scimitar, and then build straight tank afterward. Sterak's gage, Your choice of Randuin's, Banshee's, Dead Man's Plate, or Spirit Visage for maximum lifesteal cancer, and then just faceroll the squishies that can no longer kill you, and can't take your fucking disgusting 100% crit chance and make sure to top it off with a Malphite, because lord knows at this point we might as well give more people cancer than the Chernobyl disaster and Yasuo's ult can be triggered by someone so much as being tripped by a small rock so that, for a split second, their body isn't touching the ground.
Honestly, Yasuo is not as easy as everyone makes him out to be. This kind of build path only works when you have the gold for it, and if you do you're ahead. Any champion when ahead can mash their face on the keyboard and do well.
If you want my advice, pick up a new mid lane champion. Try someone notorious for being braindead easy. Annie, Lux, Leblanc, hell, even Veigar if you're feeling adventurous. And if you're playing Yasuo anywhere else, then there is anywhere between 33.3% to 50% of your problem.