I had a lot written and accidentally erased so there goes again, shorter.
Cut energies. Most decks use 8-14. I see the need of energies for the deck and the smart way to attach it. But 22 is too much.
In addition, you're missing the Essential and Staple trainers for Expanded.
Essential for Expanded:
1 Ace Spec
4 Vs seeker
And the staples:
Prof Juniper or Sycamore
4 Ultra ball (in most cases)
Elm's lecture/Brigette/Olivia/Poke fan club...
And according to the deck strategy, not missing items and other like:
Nest ball / Level ball / Heavy ball / etc.
Field blower/Startling megaphone/
Battle compressor/Trainers mail
Choice band/Muscle band
Fighting fury belt/
Bodybuilding dumbbells/Bursting balloon
Float stone/Escape board
Rescue stretcher/Super rod
Professor letter/Energy switch/Energy loto/Energy recycler
2 or 3 Stadiums
I see the budget, I know what's starting the game. But competitive decks are made trading for the cards you need, never with what's in collection.
Getting some Theme decks and playing'em for a month in Ladder and vents, will give you a nice pool of staple cards: Cynthia, Guzma, Lillie, Switch, R stretcher... and techs like Magcargo. For water, Swampert or Alolan Sandslash. Best Theme decks right now are: Blazing volcano and Mach strike. Hydro fury and Imperial command are reinforced hitting the fire one for weakness.
About your deck you can cut 6-8 basic energies to add Essentials. If Splash is important, add 2 more once you have it.
Pokémon are good but you need more and better trainers. Remove Tierno (has never been good) and I would remove Skyla. I love the card but became a bit obsolete. Trainers mail can be a good replacement if you add enough.
Evosoda would help you a lot in this deck and big hand drawers (Prof Juniper or Sycamore, Cynthia, N, Colress, Lillie) will make your hand move on when you stuck.
Ultraball is a help to use these Aqua patch. Battle compressor is a great card in Expanded too. Would fit perfect with Vs seeker, Aqua patch, Superior energy retrieval, Energy retrieval... You see the strategy
I would add too a couple stadiums+ a Field blower+ Rescue stretcher or Super rod. Where? You see how difficult is to make a competitive deck! Maybe cutting some pokémon too and focusing more in more copies of the main attackers instead of having some 1 offs techs.
Wish anything written is useful, let us know
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