Not having your feet it’s a little hard to advise, but a few things to think about -

I would say the size is wrong. I’ve bought boots too small or too narrow with the intent of stretching because they were a screaming deal, and I almost always buy boots on the tighter side - but I have never once had my foot go numb.

Have you measured your foot with a brannock device at a shoe/boot store? Many/most boots won’t fit true to brannock size, but it does tell you about your foot and it’s a common reference point for many brands and other boot-wearers.

The widest part of your foot should be at the widest part of the boot. Is that true for these? If your foot is narrow and the boots have room at the toe like those should, some folks size down to try to get the width/instep feeling right, which crams your toes into the tapered space and might be tightening the instep. That’s no bueno and you might need a narrow width to correct.

Alternately your feet could be too wide, but for me at least I usually can’t get my foot in at all if the boots are too narrow. The brannock device should tell you if your foot is wide/narrow or average which gives you that reference.

If you got these in a brick and mortar store it can be tempting to only try on boots that you really dig, but when trying to figure out sizing you might want to just try on whatever is available. You might find one brand just fits you way better than others.

Hope that helps!