There's a difference between being toxic and being constructive

Should be self explanatory but it's not. When someone asks you why you did something instead of doing something else you have a right to ignore them, or to respond with a reasonable explanation. First time playing insert champion IS a valid excuse. But it also means that you should be receptive to criticism so that the next time you play that champion you don't get shit on by making the same mistakes over and over. There is nothing wrong with second guessing someones play. There is nothing wrong with defending your play. But in either case you need to be receptive to the other perspective.

All that being said. If you want to rise through solo q then you need to be willing to listen to someone when they shotcall. Ignoring the baron call when your team is doing it to take scuttle on the other side of the map is throwing just as hard as making a bad baron call. If the team fails it should be because the other team were more skilled, not because your team refuses to work together. If you really disagree with someones plan... use chat to say why. A player knowing ahead of time that you will not be joining them to take drag will think twice before risking it.

In short, learn to use your words you filthy heathens.