sold apple today

I was reading the number of order for buy and sell on data.nasdaq.com bookviewer
Around 9:20 AM,  and found not many buyers willing to pay higher price,  so I understood that the price will go down,  so in order to avoid loss,  so I sold at the lowest bid,  and at 9:30, it sold at 99.24(i bought at 98.89) at Fidelity. But I checked the website site,  the price immediately dropped.

At end of day it dropped to 98.66
I could have lost some $$$,  but I avoid in less than 10 minutes.

And the money almost immediately available to trad again.

Then I dared not to do it again.

Actually,  after immediate drop,  it went went,  then drop,  and went up, twice.

If I am bold enough,  would have bought it again and sell it again twice. Which will make about $1+ profits.

I was hindered by roll over to Fidelity IRA, But I was actually can continue do this to delay the transfer just buy continue trading.  Every day can buy and sell several times,  just need to make sure it is legal