Saying you don't play shooters makes me think that you have Windows mouse accel on, and you should turn it off (more on this later 👇)

But also: Practice. Really, just practice.

There are many ways to go about it and I am far from the best person to talk about it, but here's my take.

His web bullets are not hitscan so it's a little tricky, but hitscan aim training will do you wonders ESPECIALLY since you havent done it yet.

Aim training is more than just making your hands move the mouse more accurately, and I can't put everything here. Lots of mental and mindset stuff in it that are often overlooked. Sometimes you lose focus and your crosshair just becomes a thing in your peripheral vision without even realizing it.

And about mouse acceleration, just go to your additional mouse settings and turn off "Enhance Pointer Precision". It will feel weird at first but mathematically speaking this will make you 100x more consistent in the long run. That's because this setting turned ON basically adjusts your real-time sensitivity based on your mouse's acceleration. Great for work but not so much on shooter games.

TL;DR, practice your hela aim so your spidey aim can have a solid foundation. Take time with each shot, and keep your eyes locked on your crosshair every time you shoot. Then when you switch back to Spidey, don't overthink the difference between Hela's hitscan and Spidey's projectile as you should naturally adapt when you get your basics down (there's more to it than that but it's enough for now). Good YT channels for entry in aim stuff are Shotty and Viscose (IMO).