> Maybe my grounds are not connected correctly.
Maybe - maybe other connections are not correct. Maybe the pinout of the
OP-Amp is different or you have mixed something up?
First part of a circuit debugging is your check whether the circuiit is
wired accoring to plan and all components are accroding to plan. Second
check is to check whether you have missed something in your fist check.
Next check is an overall check: everything connected correctly, wires
Have you done your three checks?
I think you can find your mistake this way on your own and learn
something through this method.