The diference between Solo q and Ranked

I am a mid laner main so i will talk about mid The only big difference bettween solo queue and Ranked is that you get really different champs to play against for example in solo queue you play against and and in ranked you play against and my point is that in solo queue you play against champs that are easy to counter and on ranked you play against champions that require more skill and are harded to play against Its also hard to play ranked vs 4 main while your team only has 2 i lost 5 games in a row and im planning on switching roles