Hi there:
After gambling income is entered. Turbo tax will ask about gambling losses and allow entry point for losses.
You should have been issued a W-2G for the gain/losses from gambling.
In TurboTax search for W-2G and use the Jump To link to take you to that section.
I hope this is helpful.
Gambling
To enter the W-2G or other documents For your Gambling winnings--Go to Federal>Wages & Income>Less Common Income>Gambling Winnings
You can enter your winnings, and then keep clicking through the interview to enter gambling losses.
https://www.irs.gov/help/ita/how-do-i-claim-my-gambling-winnings-and-or-losses
Gambling winnings are taxable income. Losses are an itemized deduction. If you do not have enough itemized deductions to exceed your standard deduction, your losses will have no effect.
https://blog.turbotax.intuit.com/income-and-investments/how-are-gambling-winnings-taxed-8891/
https://ttlc.intuit.com/questions/1900352-can-i-deduct-my-gambling-losses
2022 STANDARD DEDUCTION AMOUNTS
SINGLE $12,950 (65 or older + $1750)
MARRIED FILING SEPARATELY $12,950 (65 or older + $1750)
MARRIED FILING JOINTLY $25,900 (65 or older + $1400 per spouse)
HEAD OF HOUSEHOLD $19,400 (65 or older +$1750)
Legally Blind + $1750