How to do bunker missions if there are aggressive turrets?

I can't dare to do a bunker mission because of the aggressive turrets. As sson as I enter the area turrets start to shoot at me and as I am learning to fly, I can not evade them.

I know once I accidentally did a bunker mission and got good loot and üç but then I can't dare.

Is there a trick or easy way you can share with me please?

Thanks