Hi Alexis,
First thing I’d do is un-check Clamp Overlap. That’s often preventing Bevels to show up.
Also, you might have some so-called ‘Double Vertices’. Select all Verrtices (with A) and then M > Merge > By Distance.
And while you’re at it, follow that with: SHIFT+N, to re-calculate your Normals.
It is also possible that your Scale is not Applied. In Object Mode, with the console Selected, CTRL+A > Apply > Scale.
Let us know if that helped, please.
