Pitbull in an orphanage

Everyone's favorite room temperature IQ random - Bibi, is in a fairly interesting place in the current meta. She has knockback, a good amount of health, very high speed (even higher with the chosen star power) and hits pretty hard, albeit slow.
We use Vitamin Booster to shrug off damage mid fight, much like a pitbull shrugs off getting hit with a sledgehammer while it's eating the neighbours kid. Don't rely on this to save you from a nuke though, it exists so you can push through or quickly recover from dangerous situations, not nullify them.
We take Home Run to embody the primal rage that rises from within the average pitbull when they see an unattended toddler in a yard.
This will help you reach the enemy and allows you to dodge projectiles with less difficulty, as you bob and weave through attacks like a policeman weaves through accountability after murdering a minority. On purpose in case it wasn't clear enough.
You can comfortably 3-shot a good chunk of the roster, so take advantage of that. But be aware, your attacks aren't quick, only their recharge is. People can dodge them by going behind you, so track how your opponents move.
The gears are map specific, but generally speed and damage are the way to go. Those 2 stats stack well with Bibi's already pretty high base speed and damage.
You can change speed into shield if there's a slight lack of cover, but even then, why pick Bibi if you have 0 cover?Counters:
Escape tools/Knockback - Brawlers with ways of hampering your movement are one of your biggest weaknesses - because if you can't reach them, and they can reach you the situation won't be the great.
Tank busters - characters with high burst and total damage are a handfull. If they can outdps you 100-0% then you might wanna change up your playstyle to a hit and run. Just don't do it in a gentrified neighbourhood.
Open maps - You are a mobility tank, sure, but if the entire map is just a sightline then why'd you even pick a tank instead of a sniper to begin with?
Plain stupidity - Yeah, I know, what a concept. If you think 1v3ing a burst damage team just stop playing Bibi. Not hard to grasp, I know, but I doubt the average Bibi player can understand anything but move forward swing bat.