AA lock-on missiles are ineffective

Piece of advice when shooting down aircraft. I am no Mujahedin able to do it 100% of the time but have a lot of success.

In the AA tank. Lock on, if they don't pop flares, shoot 1 missile. Re-acquire and fire the second one... should hit, unless they fly really well or it hits an obstruction.

When using MANPADs, acquire and track. Get them to leave the scene or pop flares. If they refuse to pop or leave, shoot. Re-acquire, they will leave or go low. Keeping the helo low is just as good as getting it to leave. They can't hit the targets they want and the moment they go high again, acquire, track, shoot. Do this enough and you will either get them to be shy about coming into your AO or they quit engaging. Regardless, you reduced or removed the air threat.

My only complaint when playing solo is the low flying can't acquire. MANPADs should acquire regardless of altitude. A real stinger has a minimum acquire altitude of 15m. A Russian Igla is 30m. That is plenty low for in game. If we know anything about the stinger, it was used to great effect in Afghanistan vs Russian helos back in the early 80s. Especially when fired down into their rotors. On the BF6 map Liberation Peak, a stinger "should" still be able to be fired down when a jet or helo goes into the valley.
The biggest issue is on maps the helos have buildings to fly behind. They hide behind those till their countermeasures are up again. At least staying on them and shooting missiles at them keeps them from just raging over the battlefield at will. You will also have way more success teaming up with someone. Sadly chasing the helo off is not shooting it down for credit and you get no appreciation for keeping the skies somewhat safer.