If you haven't done so already, please fill it up!
Though their response may be slow, Dena has shown that they do take players' feedback into account. The latest QoL update is pretty solid evidence IMO.
If you have filled it up, what feedback did you give?
With the energy system being like it is, it seems super lopsided towards going second
I remember thinking the same thing when I first got into the game. Apparently, that was indeed the case - until they introduced cards that made going first good: baby pokemons, Suicune, Hydreigon, etc
But a new player like you won't have these cards right off the bat! So this is a legitimate concern IMO.