unsolicited advice: don't talk about teemo. you barely did anything besides getting some kills wit your teammates, you didn't even help at herald and complained about your team dying, also don't focus the zac in team fights, funny vid tho
yes, stealing multiple kills from your teamates will set them behind, im not sure if youre aware of this but this is a team game, you should roam even when its not just a free kill for YOU.
If you genuinly want to post more league content, rewatch it and consider if you would enjoy watching your own video. Just saying basically no one wants to listen to a guy complaining the whole game. Take this as constructive feedback, overall I nice vid, keep it up.