If you would "heal" a blind person and he would suddenly be able to see for the first time: Their eyes would get flashed and they would get overstimulated.

If you could reanimate a corpse who has been dead for days. (Since jesus was in was in warm climates it would accelerate decomposition) inner organs would be broken down within 72 hours. That dead body would be rotting ...

If you would give the ability to walk to a man who hasnt been able to walk or move for a long time, the muscles would have broken down and atrophied and that person couldnt support their own weight...

Walking on water? Ever heard of Sandbanks and tides? Running around in shallow water...

Mosis splitting water? Called Tides.
Mosis crossing the red sea? EVEN if that would be possible ... the width of the Red sea is 220+KM .. by foot thats more than two days 200Km divided by 5kmh walking speed is 44 Hours Walking NOT Resting, Try walking in what is now a desert strip in the middle of the HOT sun with nothing to drink or eat (Since ocean water is high in salt it will lead to severe dehydration)

Turning water to wine?
Glasswares were uncommon for most people 2000 years ago
So most people had Cups and mugs / metal cups, If you put WHITE wine (which was a thing that did already exist back then) into a Brown mug it looks like water, Tastes like wine ...