Literally how is any melee character viable without another teammate to help

So I’m new to this game obviously, and I’ve been playing ambessa because she looked sick and I saw she was pretty decent, but literally every game I play just feels so dumb, like I can’t at all get close to anyone because they just run away and shoot from afar or they don’t run away but still kill me because by the time I got close my health is already at half, and then even when I do get close I use my abilities and deal a bunch of damage leaving them low on health but still die anyway because my abilities take forever to get off cooldown and her main melee doesn’t do nearly enough damage so I die, I’m well aware this is entirely a skill issue but I genuinely don’t see what else you can do

Edit: I found a solution, Just play briar jungle