What do you hope to accomplish by staying?
The sync premade will win regardless and you have wasted your time serving as their cannon fodder.
This is just selfish.
“I prefer to play solo so only the interests of solo players should matter.”
The world doesn’t revolve around you. Players in groups are a legitimate part of the random bg playerbase.
You don’t seem to understand why some 5 man groups in random bgs are as effective as they are. Do 5 average Joes somehow become superheroes if they queue together in a group? War game central is not an elitist community unlike many 5-stack random bg communities. Everyone can join as long as they have an interest in PvP. 5 groups are only oppressive when you put strong players in your group.
If the player quality of the group members is nothing special, it is as if they are random players, except that it is more social and encourages interaction and building connections between the group members.
Why should I have a problem with that? I encourage it.
“They are much stronger than our team, why? Oh, it is because they have good gear, play the objectives better and join in groups. Where can I find players to team up with who are motivated and play for the win?”
There are multiple ways to interpret and react to events. The slave becomes bitter and resentful, a healthy person sees that certain behaviors lead to some players being more successful than others and tries to replicate them.
Why do some players prefer to play in groups? Because they are tired of players who put no effort in, leech off their teammates without contributing anything, don’t play the objectives, go afk and suck at fighting. They prefer to spend their time with like-minded individuals and enjoy their victories together.