I found a medium post that explained that you could add an addon to chrome and it would automatically click on the claim button for you.
However, that script didn't work 100% for me, so I updated it if anyone wants it :)
Here's the link to the medium guide:
https://medium.com/@stadja/auto-claim-your-itch-io-mega-bundle-games-c425f6a9c1a...
and then just use my changed script instead, not the most beautiful script, but it works:
// is there a game to claim ? if yes, claim it
console.log("Woo!!!");
if ($('[value="claim"]') && $('[value="claim"]')[0]) {
console.log("Claiming game");
$('[value="claim"]')[0].click();
// have I claimed a game ? If yes, go back
} else if($(".next_page")[0])
{
console.log("No Games found, going to next page");
$(".next_page")[0].click()
}
else if ($("a[href*='https://itch.io/bundle/download/']")[0]) {
console.log("Going back!");
$("a[href*='https://itch.io/bundle/download/']")[0].click();
// no game to claim, no game claimed, change page
}