Long streaks of losing (everyone gets them) induces many people to believe this site is loaded with cheats.
I conjecture they are correct.
I don't have any evidence one way or the other, but my intuition is cheating is probably pretty rare. It just seems like a lot of pointless effort.
(Also, I don't know why a losing streak would suggest others are cheating unless you're one of the top players in the world.)
Spend a reasonable length of time in the forum devoted specifically to the topic of cheating will rapidly convince you of the prevalence of the problem.
That doesn't absolve folks who rapidly jump to conclusions because they lose.
But we all know that chess players are thoroughly eccentric, and that gamers with chess engines love to piss them off.
On balance, just live with it. Very Simple.