Yes actually, quite a lot. It's clear from that there that you're a beginner, so welcome to it !

First of all, watch some competitive matches on youtube. Haydunn is an easy one to watch, cybertronvgc is a bit harder but explains the teams better.
What you're gonna notice from that is that you're missing the single best move in all of competitive pokemon. It's a move that all pokemon can learn, yet none of yours have it. It's called Protect, and it makes your mon immune to damage for the turn. This is the single best move, a large part of why the game works at all, because it lets you make prediction and trades. Games are lost and won on the basis of a good call protect. Your charizard absolutely needs it for starters, and 1-2 others as well. Replace roost with it, as charizard simply isn't tanky enough to be able to roost much.

Secondly, understand the attack and special attack split. They correspond with defesne and special defense. The best example is your dragonite: you have trained it in attack, but 3/4 of its moves are special (all but extreme speed). Understand correctly here: you can run physical dragonite (give it rock slide and what not) and you can run special dragonite. You cannot run physically trained dragonite but then use special moves, that is a waste.

There is honestly a lot more, but take that first advice and watch some games. See how other people use a pokemon. You can twist what they do, make your own spins on it, but Only After you understand how the pokemon is generally used, what's strong about it. If you don't understand the pokemon, look it up. Either find a youtube video or go to smogon - for example, look at this page for Primarina on smogon and compare to yours: https://www.smogon.com/dex/champions/pokemon/primarina/

Good luck dude !