4v1 against me?
If we play such games, we need rules.

If there are 1/2 noobs in the enemy team, you should either kill the noobs first, or attack each experienced player only with 3 peoples at a time - 2 if you raid him, 3 to defend.

I don't complain about losing, but I complain about losing 4v1 while the whole enemy team attacked me and only me.

Your rules are silly and limiting. I have a much better set.

In such situations you should organise to peacefully capture the entire map and get every mex to 50% overdrive. Then both teams will work together to erect a massive terraformed stadium in the centre of the map. The best player from each team shall each supply 1 Pyro, 1 Venom and 1 Moderator. These units shall fight to the death in an epic arena-based micro battle to decide the outcome of the game.

This is the only honourable way of resolving such battles. Otherwise games will just decay into a host of cheap strategies such as "target the best player" and "teamwork".