Why are there so many sandbaggers at the 300 rating level?

One time my Opponent blunders all his pieces, and the other the Opponent plays me like I dont even know chess. I started checking ratings lately and 80 percent of the guys I lost to had their highest ratings 600  on average one guy even had 1300 its just crazy.

I've been stuck at 300 for almost a month because I haven't been matching with people who are actually my level.

Sandbagging is a myth. People have Good days, Average days and Bad days. Some people have good Yips, others average Yips and others bad Yips. Buried in the road hole bunker, good luck.

2 of your last 6 games you resigned in a winning position. Maybe you're the sandbagger

If you've been at the same rating for a month, it sounds like you are being matched with appropriate players. 

Why are you, or anybody is concerned about sandbaggers? I don’t know why sandbaggers waste their time on sandbagging when chess is already inherently a waste of time. Even if you play a sandbagger, how would you know that they are one? Because you lost to one? Generally I don’t think their activity would significantly affect other players.

So sandbaggers aren't real? They're a myth like Bigfoot? Uh oh, now I've done it.

Sandbaggers and Try Hards don't exist. Both myths.

Yea I might be whiny, I might complain a lot, I might not be the type of guy to be satisfied with winning only on time and never by checkmate. Yea, You're right Im whiny.

The Mars landings are a Myth.

 Are you actually claiming I am a sandbagger? This is a false accusation and I don't think you actually saw anything proving this in my profile, because there isn't. I have never ever done such thing. Maybe you just cannot explain what the problem is with sandbagging so you just accuse people of doing it.

Yes, you are a whiny little brat who simply does not understand how chess works. You probably played some bullet chess, liked it when you won, and when you lost on time you call people sandbagger. You are an immature player who does not know what different chess time modes are.

Sometimes if you play variants or times that people normally don't play (for example 30 second chess takes a while longer than normal to match you up with someone), it gives you someone with a higher rank because the system simply doesn't have anyone else.

If you've been playing unusual times, this might be the reason.

I don't see anything that indicates sandbagging. Your win / loss ratio is almost even, and it seems you are appropriately matched for your ability. Streaks happen, having a 6 game winning streak or 7 game losing streak is normal. If it is more than 10 games then you should try a longer time control. And, a player can stay at the same rating for years, one month is not a long time.

Not long ago, a player messaged me after a game and said, "I noticed right away that you didn't play like a beginner. I know what you're doing and it's not fair." I thanked her for the 'compliment'. Two days later, I tried to join a tournament and this popped up:

Ridiculous.

It seems to me that 300 would be too low to be a successful sandbagger unless you were low to begin with. It would be too obvious for a good player to sandbag with 300. I wonder if that guy I beat OTB the other week was using me to lower his rating? It wasn't a tournament so he could lower his rating and then later join a tournament. I lost to everybody else that day. Chess.com is turning me into a conspiritorialist. If you win, your a cheater or a sandbagger. If I win, it's legit. It really skews the rating system to have this stuff going on.

Or maybe he is actually a 300 ranked player and didn't realize he was in a winning position and thought he was going to loose so he resigned. When you are that bad of a chess player like I am. You don't see alot that the higher ranked players see.