First of all like gauchojake said, you need to stop betting 2-3 horses per race.
When placing a Horse wager your horse could be 3-1, but as it gets closer to post time that horse could be bet down or up
The gate opens and the Final odds are set.
The highest priced horse you hit paid $5.80
That 1st race paid $2.80, you bet two horses to win, you lost money
The 2nd race winner paid $3.40, you played two horses, you Lost.
the 3rd race winner paid $5.80, you played two horses, you made $1.80
in the 6th race the winner paid $3.40, you played three horse, but one was Scratched ( did not start/race ) you still lost 60 cents
*** the above based on $2.00 wagers
You can find the results here,
https://www.equibase.com/static/char...20USA-EQB.html
bottom line is horse odds move, you can place a wager on a horse that is 10-1 morning line, and he can go off at 2-1
You can also use the above site to get information on each horse, but I think you need more time
Good luck