What is wrong with my build?

A little more nice explanation than the previous comments:

You have no good comps there.

You have 2 glacials, one is pretty good (braum), the other one is one of the worst units in the game (Liss). You have 2 brawlers (Wick and blitz), thats a good start if you want to go full brawlers, but only 2 units on mid and late game dont get you good results. You have 2 wild (Wick and nidalee), thats a good oppener, but you dont have the full comp to benefit your other units. You have 1 socerer/yordle (lulu), that doesnt fit at all in what you have. You have 1 ninja/assasin (zed), that is good early but if you have 3 assasins, otherwise is not very good by himself.

And you didnt had any 3 star units.

A couple of questions:

Why to keep lulu and zed,when they didnt offer anything to your team? You had 2 Wild, 2 brawlers and 2 glacials, why not pick one of those comps?

If you would have picked wild, you could have gone Rengar and Ahri while waiting for Gnar, then the Lulu would have a good addition, only needing a third sorcerer, that could have been an aurelion, a karthus, a Morgana, even a twisted fate would have suffice while you could get the first 2 ones, and then at lvl 7 you could add a shyvanna and could have had Full wild + Lvl 1 Shapeshifters + Full dragons + 3 sorcerers. This at lvl 7.

If you would have picked glacials, you could get volibear to combo with blitz while you could get units like sejuani, meanwhile you could have gotten Kennen and Brand to make elementalist while you waited for anivia, for an end game of 6 glacials and 3 Elementalist at lvl 7.

If you would have picked Brawlers, you could have started to pick units like voli, rek sai, Vi, keeping blitz and warwick unitl you find cho. You could have keep the zed if you wanted to go the assasin variant, or you could have go for hextech with jinx, or sorcerers with kass, aurelion/karthus and maybe if you oculd, to set chogath as sorcerer with the spatula item. that would net you lvl 2 brawlers + assasins + void at lvl 7, full brawlers + hextech at lvl 7 upgrading to full void at lvl 8, or lvl 2 brawlers + sorcerers + full void at lvl 7/8.

Now, at some point, did you thought about those 3 posibilities for your team?

1. no units above tier 2. best carry units are naturally tier 3+
2. you have nice defense but no hard carry units. zed can't carry anyone. especially without assassin synergy (and even with).
3. since you have no tier 3+ units and you're the same level as people with 3 star units, i'm guessing you're rolling too much early on. i usually don't roll till 6 at the very minimum, often 7, unless i have tons of pairs and have a good chance of landing a set
4. no syngergies. even the ones you have aren't effective. post nerf brawlers are only good with vi or cho, you need attack speed (ashe) if you're running glacials, you need ahri or gnar if you're running wild.

no good synergies

The real question is: what isn't wrong with your build?