You can't tell if someone trolls in the other team unless they int, which is obvious.
Having a bad game != int
Also it doesn't say if someone on the other team d/c or afk.
Seeing how pissed off you are, you could be the reason, may it be how you communicate, your weight on the team, etc. If in 117 games there's 30 people on YOUR team who purposely make YOU lose, and there's ZERO in the enemy team, you might wanna check on yourself.
Take a break, go do norms/arams (I recommend arams if you tilt really often). I did that for over a year until my normal mmr got up to 400 more pts than ranked (1850 vs 1450).
Also, when on lose streaks, stop. After 2 losses, tilted or not, I don't play ranked until at least the next day. It doesn't set you up for a good mood, and makes you much more likely to lose.