I think elevator4 is on the right track.
The sensor is basically a variable resistor, if you can do the math you don’t really need the negative supply.
According to their user manual, no force is about 1M, max force about 50K. So all you really need to do is measure that resistance, which could be done by measuring the voltage of a resistor divider with the sensor and a fixed resistor.
With a 200K resistor connected to 5V and the sensor connected to GND, 0 force would be the 5V, and full force would be 1V. You’d have to calibrate the setup and try to match their transfer curve.