No, you're just trying to blame someone. Season 5 was a very slow paced game meta. Season 6 was speed up, but also introduced many anti-snowball mechanics as well as healthy snowballing ones. Season 7 doesn't change snowballing, but just fucks up jungle.
But how does this make it a snowball meta? It isn't. The early and mid game has ALWAYS been the most important parts of League because 1) You cannot rely on late game alone, 2) It's easiest to win in the mid game, 3) Most objectives are taken during the mid game, and 4) the powercurves of all roles allign near mid game.
Now that I've explained that part, let's talk about you? Why do you lose games? https://na.op.gg/summoner/userName=Bard+to+Believe The answer, is very simple. You pick champions in roles they shouldn't be played in and build incorrectly.
You played Diana, a mid laner, in the top lane. Lost to Kennen (not shocking) and went 1/8. You build Sorc Boots vs Kennen, instead of Merc Treads. You were building what seems to be Rylai's. This is the worst choice you could possibily make. Rylai's isn't gold efficient in stats and Diana can't make good use of it.
Next, you played Gragas top. The problems: You went Bond of Stone for your keystone. You build Sorc Boots vs Teemo, instead of Mercs or Tabi. You bough Doran's Ring first back instead of Corrupting Potion, which would be much better vs Teemo. You sold both Doran's items at 15 minutes in, which is way too early.
Next, you played Lee Sin, a jungler, top lane. First off: You had 14 deaths. Without enough kill participation, that's a huge no-no. You were losing lane, but you build a snowballing item, Rav Hydra. You build Rav Hydra on Lee Sin, which you shouldn't do. You didn't build Black Cleaver. You sold Doran's Blade at 17 minutes for a Pickaxe. Don't sell your only Doran's Item for a component that's worse than the Doran's item unless it's around 25 minutes or beyond. Finally, you began to build Sunfire Cape, a laning phase item, on Lee Sin, way after laning phase.
Every single Bard top game: You played Bard top unironically. Also top going Mobi Boots, makes you lose more 1v1s by not having Ninja Tabi.
Finally, your Xin Zhao jungle. Three things: You should have gone Ninja Tabi because all their CC were knockups which aren't reduced by Merc Treads. You went Blue smite for some reason; As Xin Zhao, always take red smite. It's literally the best smite because it's really overpowered. Finally, and this is the best advice, unless you're playing Master Yi or Kayle, don't build Rageblade on a melee champion. What you should have build was Sterak's Gage (because of the Trinity Force synergy).
These are basic, all-too-common mistakes in picking and building seen in low elo. You wanna play Tristana ADC even though she isn't meta? Go ahead, she's an ADC. Playing Tristana mid? Please don't; you have a team and they want to win. It isn't the game's fault you're losing, unless it's matchmaking (which does tend to happen from time to time), it's yours.