Yes---you will need online Deluxe if you have a W-2G. You cannot enter a W-2G using the Free Edition.
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
2024 STANDARD DEDUCTION AMOUNTS
SINGLE $14,600 (65 or older/legally blind + $1950)
MARRIED FILING SEPARATELY $14,600 (65 or older/legally blind + $1550)
MARRIED FILING JOINTLY $29,200 (65 or older/legally blind + $1550)
HEAD OF HOUSEHOLD $21,900 (65 or older/legally blind + $1950)