As Don says, this has all been researched to death. The answer is no statistically significant difference to the basic strategy or index strategy player. I know that Norm has data on this. Perhaps he will chime in.
For shorter term analysis you can use the standard deviation to determine the probability that your results will be +/- a given amount from expectation.
May I suggest that you read through the information here
https://www.blackjackincolor.com/
before you ask any more basic questions. You'll get your answers faster and gain a more solid foundation of knowledge at the same time.
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