I wish I could understand what the buys and sells

I wish I could understand what the buys and sells mean a little more.  I put up a bid for 20k at .032.  My 3 fills are 6136 at 12:48  13800 at 1:43 and 64 at 2:53.  Confused how so many others were bought around me since I put my block in all at the same time.  Thought mine would have to get filled before any others would.