Is this something you can fix?

After having taken a bunch of footage, I discovered if an object/objects are "close" to the osmo, or you have close objects AND distance objects - and you take a video while 'holding' the osmo - the objects in the foreground "bounce" up and down. So it is not stable.

Any way to fix that?

Thanks.

Hmmmm.... Maybe you could post a good representative sample.  Sometimes moving objects that are video'd with a fast shutter speed, will appear jumpy.  (For example) that can occur when the settings are in Auto and the lighting is bright.  (That's one of the reasons we use UD filters to reduct the amount of light and slow the shutter speed)  Seeing an example will help to determine if that's the issue.

If you are talking about when you walk, then yes. You have to learn to walk more smoothly or find an X-axis stabiliser. It's a common problem for those starting out, including myself.