Improving yourself

You don't always win games. You have to accept that. 

This is a team game so if you have ex. 2 lanes that are failing. Always focus on your own lane and try to improve. Because you are training for the next possible game, and this time it might just be YOU that is failing hard. 

If your lane is failing hard and you can't seem to win. Just use the "assist me" ping and wait till your teammates are ready and can start to help you turn your lane. Try to stall the lane by getting GP10 items and playing very passively. This is rewarding if you see that you died twice and the opponent can simply snack you when you come too close. At this point when you lost your lane hard, you need 2 people to gank or else it wont be as effective.

Keeping the focus on your own game is extremely important in soloqueue. You can't rely on your teammates in soloqueue cause you don't have voic. You just have to rely on pings and hope if your teammates notice. 

If all other lanes lost. Just keep trying.. There might be that one enemy team member who decided to troll and boom. You have a great opportunity to win. Also keep a close look on whos team has the endgame champions. You might get steamrolled in the early but the late game is a different story.