Net Positive, Net Frustrating

Today I spent a whole day, and only gained about $225.5. I made several correct decisions and several incorrect ones, essentially I wasted the day, the first correct execution was I bought 10 contracts 7535c at $1.25/contract, but I sold them at $1.35/contract; the second execution was I bought 10 contracts at $1.4/contract, but I sold them at $1.45/contract. Basically I gained just a bit from my correct decisions but lost a lot from wrong choices.

The MOC imbalance for the S&P 500 was - 5525 mln, yet SPXW still rose to 7650.5 finally. It is so hard for someone who wants to make money in a bull market by buying puts.