How should i deal with luck when...

So I was Gold II before the preseason ended with an mmr of Gold I, after the placements i ended in silver 2 and tried to climb fast, i was paired with gold I and Plats V and IV, nothing to worry about but i always have bad luck and end up with bad teammates and lost games doesnt matter if i carry all of them.

Its hard for me to deal with that, I always had bad luck so i learnt to deal with it in most games but now I lost all my mmr, it says i'm now below average of silver 2 when my mmr 2 games ago was gold II even in silver 2 just because two lost in a row.

So, if i get bad teammates and can't carry them because they don't rotate, they suicide what should I do to climb back and recover 2 leagues of mmr?

I'm tired of bad luck streaks... I worked really hard for a long time improving my own gameplay and focusing on my self but I have a limit on what I can carry...

And its not just a bad streak... I have them every single week...

Anything I can do?