Every day trading strategy you use should be based on the behavior of the market.
You have to understand how the market works from the really simple details like trading hours to the complex details like trading psychology.
Not every market is the same and you have to consider every detail. In fact, in 1990´s day trading had a bad reputation due to “novice traders” that thought trading was a "get rich quick" thing.
You might trade futures, forex, stocks, options or crypto, etc. they all are traded in slightly different ways. You have to understand the specific differences between each one before you trade them.
Lack of knowledge and understanding will most likely lead to losses.
"Before you invest in something, invest in time to understand it. " ~ Warren Buffett