You are referring to gambling sessions where you track your total winnings and losses per session and net the gain or loss. Then adding up all sessions for the year for winning sessions and losing sessions.
See this website for extremely detailed information and reporting procedures which also include completing a Form 8275 (Disclosure Statement) and gambling diary information with the tax return - https://www.morrellawpllc.com/tax-preparation-and-resolution/taxation-of-recreational-gamblers-an-ov...
