Help with a receipe

I make pumpkin bread and since I had wls I have been making one sugar-free for myself but the problem is that it comes out way more dense than the normal one that I make and it sits too heavy in my stomach. Has anyone taken an original receipt and turned it sugar-free and had this problem? If so do you know any way to make it lighter?

Thanks for any help

https://www.wholesomeyum.com/recipes/sugar-free-pumpkin-brea d-low-carb-paleo/

https://www.ibreatheimhungry.com/easy-pumpkin-quick-bread-lo w-carb-and-gluten-free/

https://www.ketoconnect.net/keto-pumpkin-bread/

these are good.. yummy