Does riot really suck at balancing?

Idk, honestly this is what I'm seeing tanks are doing too much damage, mages are building too tanky, assassins have too much survivability, fighters are becoming pure tanks, and marksman have too much mobility granted by their supports.......The meta and in all honestly what this game is becoming is simply pick the champion that is the strongest and if you do your win rate will go up after losing a few games to get used to new champions. Do people play Yasuo to have fun, or is it just fun because it's so easy for a Yasuo to snowball? Same with other champions....Xayah.....please correct me if I'm wrong but isn't a marksman's damage clearly defined off autoing and doing damage over time, not simply being a Vayne and practically melting a full health tank in less than a second......exaggeration but why create a marksman that has the potential to do so much damage from one ability? An ability, why give Caitlyn the ability to have so many traps out with zero cooldown on the ability? Why give Miss Fortune a q that chops down another adc's health bar? Why give Vayne the ability to melt a tank as if they were nothing? Why make Malphite, Sejuani and other tanks beable to 1 v 1 a marksman when marksman are supposed to be able to kite said tanks, before this is how it worked for the most part, Tanks countered Fighters and Assassins by having too much resistances and suck against mages and marksmen due to being able to be kited to death and or bursted down by magic damage?

Fighters countered Assassins, and Mages, due to having the mobility and health to get to said assassin or mage before they could get off their burst on them, but were weak to tanks and marksman due to tanks being too tanky and marksman being too long ranged? Assassins counter mages and marksmen due to their squishness. While Assassins fell to fighters and tanks which could survive an initial assassin's damage. Mages countered tanks and marksman due to their incredible magical burst type damage but fell to fighters and assassins due to needing range but not having enough to keep a distance from them. Marksman countered fighters and tanks due to overall being able to kite these tanks but fell to assassins and mages due to their incredible burst. I'm not sure if it's just me or not but in all honestly that no longer seems that way anymore not even close, tanks can 1 v 1 a marksman, some marksman can avoid an assassins burst, mages are not getting destroyed by an assassin's burst anymore, fighters now can kill tanks. It's just to me this whole game is getting worst and worst every season with so much damage and games being faster games are a lot more one sided now than they have ever been.