I have been losing many games lately. Uhmm like classical cause it is easy but don't know why lost 200 elo in 2 days . I was always at 1500 and increased to nearly 1600, when I was 1500 I felt games very easy but as soon as I reached 200 opponents started playing real good tactics like 1 player played 6 move checkmate. How do I set that?
Analyze your finished games, so you know your mistakes & blunders.
Until 4 hours ago, your rating was still "provisional" and even now your ratind deviation is still almost 100. Which mean that you should not overestimate such high jumps as your earlier rating wasn't very reliable and the updates after each game are still quite large.