DRV8833 does not work with output of hobby RC receiver
What you are literally doing wrong is using an incompatible selection of parts.

Your DRV8833 is an H-bridge driver where the motor is only on when some combination of the inputs are on.  Typically they would either be set in a chosen direction configuration constantly or more commonly for a percentage of time via pulse width modulation.

In contrast your Radio Set communicates commanded servo positions, not motor drive states.  You may be getting a little confused, because this communication is also a pulse width modulation.  But it is a pulse width with a very slight duty cycle - typically only 1-2 mS of on time, out of a 20 mS or so (50 Hz) repetition rate, because in the classic implementation the 4-7 channels were transmitted over the air one after another in turn.

This low duty cycle signal is not designed to feed an H-bridge, but rather to command either a classic servo error amplifier, or more likely today an MCU in a servo or ESC.  If you try to feed it directly into an H-bridge, you maximum on time would be maybe 10%, and that's not really enough to move a motor, especially at a very low 50 Hz frame rate.

You need to either buy or build an ESC to drive your motor.  Selection of such is explicitly off topic here, and designing such is too broad to fit within the bounds of a Stack Exchange question.  If you look in RC hobbyist publications or forums you will find that people have occasionally made DIY efforts over the years which you might learn from.