One of my two best friends in the world

thank you man

putting this on your profile as help. if you use disguises, change them up often and try to use as much cloak as possible to get to the enemies. remember, its really easy to shoot a teammate and not lose much, meanwhile a spy loses their life if they do that.
and disabling viewmodels for spy can help with making backstabs easier to learn cause the visual aspect of the knife is gone, letting you stab the instant you're in range.

keep in mind all these tips are from youtube. you can always find help when trying to play spy.
and dying is a normal thing, dont worry about it too much.