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Is there anyway where i can disable mobs disadvantages like zombies,skeletons gets damaged by fire from the sun? or Warden darkness sight.

i got one more question, can i enable or you add realistic hands strength increase, like i want deal damage using zombie with their hand, the same damage zombies does to me as a player. without using swords or any strength potions etc..

Hey!

Is there anyway where i can disable mobs disadvantages like zombies,skeletons gets damaged by fire from the sun? or Warden darkness sight.

Take a look at the config options wardenIsBlinded and traitBlacklist in your config/walkers.json5 file.
You might want to disable the walkers:burn_in_daylight trait for the skeletons, zombies, etc.

i got one more question, can i enable or you add realistic hands strength increase, like i want deal damage using zombie with their hand, the same damage zombies does to me as a player. without using swords or any strength potions etc..

By default, the attack mechanism of the mob is used- when morphed as a zombie, you'll deal damage like a zombie does (including the attack damage, but it is not displayed in the /attributes command since it is not the attack damage but the whole attacking mechanism).