rookie trading on expiration

I have been day trading options for almost 6 months now, and ive lost a ton of money. I've decided to regroup, rebuild and trade smart because i now realize how stupid i was. after a much needed break i hopped back in today and was successful. the trade was as follows:


I watched as the stock opened up @ $139 and dropped a couple of dollars the first minute. As always the stock seemed to get pinned so I looked to see which put was crossed the most and I determined it was the $1135 put. When I decided I was going to buy it, it was ITM, so I waited a few minutes and was able to purchase:

2 goog jan 10 $1135.00 at 2.90

As i expected, the price of the put began to rise. The selling of the put was:

2 goog jan 10 $1135.00 at 4.40

My target price was 4.30 but i managed to sell it at 4.40.

I am a new to this and any criticism will be appreciated.
 
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