Hostile mobs especially skeletons and blaze, wither skeleton

Yeah so this is not an idea, but ive been seriously frustated with the way bedrock minecraft (pocket edition specifically). Like the skeletons shoot THROUGH your shield even if you held up your shield, blazes just resort to melee combat instead of shooting fireballs even tho im not that close?? And wither skeletons behaves the same like the problem i've had with skeleton. This mechanic has ruined a lot of my hardcore run, either they just ignore the shield or they knock you back as if they had a knockback 225. And sometimes when the skeleton shoot is way to unpredictable and WHY DO THEY HAVE AIMBOT. Thats it from me, Sincerely