Conduct yourself accordingly. Thank players that helped their team. There will be good teams and bad teams. Enjoy the games and move on, don't let a game get you down.
If someone struggles during a battle, check their # of games, if they are new welcome them to WoT and let them know it will take time. Offer them some suggestions and most of all kindness. Tell them not to let the GAHTs get them down. Don't explain what that means, they have other things to worry about. Tell them about skill4ltu & iyouxin
Remember there are weak minded players with high stats that spam gold at low tiers to feed their self esteem, tolerate their weakness the best you can. Remember, there are high level players that do not have skill, yet play to enjoy the game, don't get mad at them for trying to have fun. When folks send you a negative message after the battle remember that they most likely suffer from low IQ or their GAHT medication is impacting them, don't be mean to them just ignore them if you can.