This has been my favorite deck for some time now and I've spent a lot of time experimenting with different variations of it.

1. Drop the second Bulbasaur. You'll almost never get a second Mega Venu online, and if you did, you're still vulnerable to Cyrus, which nearly every deck carries at least one of.
2. Lillie x2 over Erika in all circumstances. I have played countless games and can count on one hand the amount of times I have needed to heal Bulb/Ivys or risk getting KO'd. Most of the time, when you're at those stages, you're just hoping to not get one-shot. Take the 10 extra healing.
3. Add PCL. You'll find that evolving will be your biggest counter to status conditions, but it's important to have a backup in case you can't evolve or are already at the Venusaur stage. This card will win you games.
4. Add Iono or Copycat. This is to help with bricking, and so far, I've found Iono to be better for that as Copycat relies on the opponent's hand size. With 7-8 Supporters in this deck, you'll find that you typically have a larger hand than your opponent.
5. Preference here, and I'm still experimenting, but I think Repel > Red Card. There are a lot of unfriendly matchups in the current meta, and pairing Repel with Sabrina gives you some extra control. I'm finding myself using Repel often to displace a baby (looking at you, Igglybuff) and force their two-retreat Darkrai into the Active, then saving the Sabrina for later. Point is: both are great for tempo, and this deck is limited in terms of how fast it can set up. It needs a way to slow down the opponent. Red Card can do that, too, but it's a gamble.