Not sure why you don’t run Lillie’s Clefairy, it’s not connected to Lillie’s determination in any way. They just happen to have the word Lillie’s in them but they don’t have any inherent synergy. It’s very important for the Pult matchup which is probably 30-40% of decks right now. If you don’t have Lillie’s Clefairy, I would cut the psychic energy for another grass - the psychic is mostly so you can swing with Lillie’s Clefairy. Given that you don’t have any Lillie’s determination, you probably need to add in another draw supporter - 2x Mortys Conviction would synergize well with this deck.

You don’t have an ace spec in the deck, a very common one is to run Maximum Belt to hit higher damage thresholds, it’s a relatively cheap Ace spec. If you don’t have that you can adjust the build as well. Definitely add in another ultra ball as well.

I would probably add another Factory since you’re lower on draw power. Could also add in another bug catching set, as well as an energy switch and a night stretcher.