Yes, I’m well aware that it's nearly impossible to change the current meta mindset dominating EU/NA.
That's why I’ve improvised a less effective—but still viable—strategy that can be executed solo.
I always go for the enemy main outpost and fully capitalize on the flag occupation bonus to pick off lone players or defenders.
From there, I observe enemy movements and capture the outpost with precise timing—either when the enemy horde has taken the teleporter or is currently engaged elsewhere.
I don’t need to go into detail, but this strategy has proven effective and often has a devastating impact on the enemy team being harassed.