Don't trust what dominates blind pick solo queue as an effective "meta".
the 3 bruiser comp is strong because it's easy. It requires very little strategy, team synergy, or communication. Bruisers have the best base stats, and so they're a safe choice when you can't rely on your teammates to know how to use a computer, let alone understand complex strategy like "protect the carry".
Being successful as a carry on this map requires teammates who know their primary job is to keep you alive and support you, and not abandon you chasing low health targets in hopes of a kill. It requires you to pick a composition with synergy- your teammate grabs an AD carry, you grab Nunu and jungle him. You pick a team that can take advantage of aura items- Zeke's Herald for an auto-attack heavy team, WotA and Abyssal for an AP heavy team. And it requires you to talk about all of this before you even get into champion select- something you can't do in solo queue.
The current domination of "3 Bruiser" isn't a meta. It's what we have in the lack of an actual meta, that results from people thinking only of what they want to play on an individual level, rather than building a 3s team with a specific strategy in mind, and until Riot implements some of their balance changes to lessen bruiser dominance, beating a 3 bruiser comp requires either that level of strategy, or someone on the opposing team to AFK/feed.
TL: DR- go play ranked 3s, develop a new meta.