Why am I so inconsistant?

For example~

Some games I can play like a machine, I predict all my opponents moves. I am nearly indestructable.

Some games I am in that indestructable mode, get to "comfortable" then make a horrible losing blunder from a winning position.

Sometimes I can move very fast.

Sometimes I take forever to move without a clue what to do.

I just don't get it why am I so Bi-polar at chess?

It's like I have a GM making my moves part of the time, but a monkey fills in the blanks, and I never know who will show up at the table in my head.

Some days I will win 20 games in a row untouchable.

Some days I will make blunder after blunder and struggle to get some draws.

Does anyone else feel like this? Like on X day your rating should be several hundred points different than on Y day?

Yes.  My level seems to have a monthly high/low, so against evenly matched opponents my wins are really inconsistent.  Just gotta keep training until even at my lowest the moves are obvious!

Try zen. If that doesn't work, try zin, preferably old vine.

I think all of us are affected by this in varying degrees. Fatigue, ego, distractions ... you name it.

Though when it comes to on-days and off-days,   My former coach used to always point out the "rating classes" that I am still losing to is a more accurate measure of my skill as opposed to the expert scalp I got at the tournament the other day.  

I maintain that the mental discipline it takes to make high quality moves (not necessarily the best but rarely stupid/bad) ALL THROUGHOUT the game is what separates the really good players from the rest of us pretenders.

With regards to your X/Y day comment, I'm thinking that as you get better, even your "off-day" chess skills should logically get better.  Muscle memory (when trained) can sometimes be quite reliable even when you are not seeing things + calculating patiently/accurately...much akin to driving a car or a task that most of us can do "competently" even though at times, it can be a background activity.

This is life mate i suggest that you don't worry about it in the end of the day the only thing that matters is that you enjoy playing this wonderful game called chess...

Your tactics are weak. That’s why you’re inconsistent.

I have the same problem.