This deck looks a lot more reasonable. I'm not really into kitchen table magic so I can't really give you any advice. Just run this deck for a while and see how it plays out.
If you still feel that you need to improve your deck to match the power level of your playgroup, these would be my next steps:
Get some ramp - ramp is roughly defined as getting ahead of the expected available mana of dropping one land per turn. The plan is that by spending your early turns ramping you can then do your powerful and expensive (mana wise) stuff earlier than your opponent can do theirs. There are some cheap (money wise) yet still great options out there, for example
Llanowar Elves,
Elvish Mystic or
Avacyn's Pilgrim. There are even some options that combine ramp with the +1/+1 counter theme you have got going on like
Rishkar, Peema Renegade.
Get some interaction - roughly defined as the ability to interact with your opponents
game plan or game pieces. From the looks of it, your deck is doing its thing and lets your opponent's do its thing. That will work if your draw is better than your opponents or the thing your deck is doing is simply stronger than the thing your opponent's deck is doing. But what if that's not the case? Typically decks run some amount of cards that allow them to
disrupt what their opponent is doing to give themselves a
fighting chance in that case.
Cankerbloom or
Knight of Autumn allow you to destroy artifacts or enchantments if necessary while also contributing to your +1/+1 counter theme if your opponent does not have any of those.
Disenchant also allows you to destroy artifacts and enchantments and does it even better than the previously mentioned cards. However oftentimes your opponent's won't have any of those around which makes
Disenchant just do nothing - the creatures are still creatures though.
You can reasonably expect your opponent to have creatures in their deck. So contrary to artifact or enchantment removal you don't really need to worry about the case where opponent doesn't. The first card that comes to mind is
Swords to Plowshares - arguably the best creature removal in the game and still pretty cheap (both in money and mana
). Other considerations (especially if you don't want to risk triggering a power level
arms race in your play group) could be
Destroy Evil or
Valorous Stance.
Dromoka's Command even has synergy with the +1/+1 counter theme.