oh boy I'm on a lose streak

Yes, you will. Seriously, some games are actually impossible to lose, just as there are games that are impossible to win.

You get 1 free win. Followed by 2 losses. Followed by 2 wins. Followed by 3 losses. Followed by 5 wins. Followed by 6 losses. Followed by 2 wins. Followed by 1 loss. Followed by 4 wins. Followed by 7 losses.

Most likely unless you're the problem

Not really. If you're just having bad games, and you demote enough for you to play against players worse than you, then your chance of winning is increased. Doesn't mean that they will be "free" though, just that you have a higher chance of winning them.

Don’t worry. Even Faker loses games, and your favorite streamers have been on monster losing streaks.

eventually

probably.

Yes it does

Same :/ .

Matchmaking is "working as intended"... A perfect 50% win ratio: can't win some, can't lose some :D