Under the federal government's proposal, gambling ads on TV would be limited to no more than three per hour between 6am and 8.30pm and be banned from live sport broadcasts.
Gambling ads would be banned from stadiums and player jerseys, but the government has been criticised for not implementing a total ban, as recommended in a report by late Labor MP Peta Murphy in 2023.
Liberal MP Simon Kennedy said the coalition would move to put in place extra measures to bolster the reforms.
"The leadership of the coalition will toughen these gambling laws. I've spoken with them and there's no doubt about that," he told ABC radio on Wednesday.
"We will be strengthening these laws. It's a question of how, not if, and we'll do it in a considered way."
The government needs the support of either the coalition or the Greens to pass the reforms, but the minor party has also criticised the laws.
The comments follow a Senate inquiry into the laws that heard allegations betting companies provided drugs, free accommodation and escorts to some of their biggest customers as inducements to keep gambling.
Former NRL player Luke Bateman also gave evidence he was targeted in a similar way while he was struggling with a gambling addiction.
Sportsbet and Tabcorp have denied the claims.
Mr Kennedy said gambling companies needed to adequately protect their clients.
"We need to actually look at concepts like a duty of care on betting agencies ... the same way lenders have a duty of care not to lend too much money to people," he said.
"The coalition is going to stand up for children ... for gambling addicts and vulnerable people, and work with whoever to get this done."
Mr Kennedy said an opt-in model was needed for gambling ads online and on streaming services, rather than users having to opt out of each provider.
Independent senator David Pocock said he was shocked by the testimony at the gambling inquiry.
"No one thinks (the proposed laws are) going to do anything to change the normalisation of gambling amongst young people in this country," he told ABC TV.
"You have a predatory industry that is doing everything to one normalise gambling amongst Australians."
Labor MP Josh Burns said the allegations at the inquiry were shameful but denied the reforms would maintain the status quo.
"I'll have the power under our reforms to turn off gambling advertising right in our home. So I'm going to have a gambling advertising-free home thanks to the legislation," he said.
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