If you don't want to be a team member then you don't get chances to experience teamwork. The accusation that everyone else is a lonewolf certainly points to your own level of team play along with them. Join their squads, or make your own and recruit people. Every server pretty much supports VOIP nowadays, so you could even talk to others if you wanted to really up the teamplay.
I have personally swept for mines tons of times for people, in fact, certain maps almost require such teamwork. While a lot of engineers don't want get their ass shot up so you personally don't have to leave your tank, you can still ask for help passing through a minefield. (be polite and patient)
If you are pinned down by mines, you should never hesitate to relocate your tank to safer ground and supporting fire. The threat of mines implies that you are too close to the enemy infantry anyways.
If you are solo in a tank and need to pass, or clear mines, then use your own engineer kit. It is intense to hop out of your ride and try to sweep an area for mines while under fire without getting capped. You can withdraw the tank to a safer area, then you bail out for a minute and clear your surroundings. If you manage to clear your immediate area of enemy infantry, you will then have approximately 15 seconds (spawn time) to find and take out those enemy mines.
If you cannot pull your tank to safety, a good tandem tactic to employ is to pop 3 or 4 smoke shells immediately on your position. Once the smoke is thick enough, you can mine detect and wrench under its' cover quite effectively.
There's tons of ways to defeat minefields, just use your imagination, this is a game after all...