It’s not what feels comfortable it’s what’s the right fit for your feet. Having different size feet is more common than having feet of the same size. Of course a shoe should accommodate the larger foot.
See a Podiatrist or almost any medical supply and get measured properly.
I’ve been measured by both. My Podiatrist measures me with an IPad in 3D.
The proper fitting footwear and a quality orthotic / insole is the only way to go.
The insoles that come with sneakers , loafers,
etc are garbage.
I have 30 - 40 pair of footwear and another 10 pair of deck boots, waders, hip boots, and then some.
I wear a custom orthotic in many of them and a quality insole bought separately in others.
You can buy a good pair of insoles starting around 40 bucks.They last about a year with normal use.
Your feet support all your weight.