If you have to hike them up then they are probably too tight. I would say try a different size or a different brand (or both).
I love my bibs from The Black Bibs and they are only $40 so it’s a pretty easy test to see if a different brand or size is better. I found the size guide didn’t fit my proportions at all so I emailed them to get a suggestion before my first purchase and then just ordered what they told me to get. They’re perfect…