I don't like playing late at night, because tiresomeness makes me go full bronze mode, and what I actually enjoy in this game is doing an action successfully (whether it's getting a kill, winning a trade, winning a fight, escaping successfully, stealing an objective, saving a mate, ...) not because I was lucky but because I knew what I was doing - call it playing well or outplaying if you want to.
And... I noticed, while playing ranked, that you tend to have better teammates in the morning (or the school days). When I say better, I mean less AFKs, less people raging, less people trolling, and even mates with a better skill (but that goes for enemies as well.
For me, it's because a lot of reasons :
- the ones who stayed awaken late at night (and are usually more tired) are sleeping during the morning,
- the ones that made a party and will be broken the next day are also sleeping,
- the ones that had to wake up early (and so will be more tired) to go to school/work are at school/work,
- the ones that rage more often because they are frustrated after (insert whatever you want here ; something that has gone wrong in their life, their school, their work,...) are not here or not frustrated, because it's the morning, a new day and nothing has happened yet,
- ... (You can add a lot of things here, but overall I believe that playing ranked (or even normal) games in the morning will go way better for you as you and your mates are probably well awaken and "happy" to start a new day.
Tl ; dr : Tiresomeness and mood greatly influence the way everyone plays and how well they are doing, and playing in the morning will allow you to meet more people in better conditions.