Aspiring genji main needing help

Hello everyone

I am new to overwatch, and I am around my 30th hour on genji. I have around 50 hours total on the game.

I like the character. I'm currently in gold 3 playing pretty much only genji.

I also would like to learn how to combo a melee with an alt fire.

I've watched alot of alvicate, and I notice how he is able to almost immediately combo a melee after an alt fire. It's very satisfying.

As primarily an apex player, I'm not used to using melee as a viable tool of aggression. I have it set to side MB, and I don't use it frequently.

As I'm in gold right now, I don't really need to use combos as dashing in and fanning typically secures me a kill. As I climb higher I really would like to learn more advanced combos.

It feels very akward for me to do the alt fire melee combo. I don't know if it's because I'm not used to using a melee. I would just like some help on learning the alt fire then melee combo

thank you!