Look, I know it's frustrating to get toxic players and idiot teammates in your matches, but there are effective and ineffective ways to get them to behave.
What you have doing by retaliating and harassing them in revenge is the most ineffective method out of all.
I. If opponents are making obnoxious comments then you should disable all chat by default. All chat doesn't benefit the game anyway so there's no harm in disabling it.
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II. If teammates are playing poorly then the best way to get them to change is to offer constructive feedback.
- "Stop feeding" is not constructive feedback
- "You can keep up in levels by staying in XP range of the minions, and only farming when your opponent is far away. This will help prevent dying in the future." is constructive.
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III. Expressing anger in-game towards an individual is never beneficial.
- if that individual is intentionally trolling to try to anger you, then you will have just given them the feedback and satisfaction that what they are doing is working, and they will want to do it more.
- if that player is just tilted and stressed out, you singling them out in front of the whole team is guaranteed to crank their stress up to 11 and it will make them completely distracted and unwilling to listen to you.