DIY removal and replace the disposer. DIY repair only because it got jammed, a wooden broom handle can help here, just be sure the switch is in the off position! DIY the electrical extension whip? Same rules generally apply here again with the drain components, disassemble and clean well, then reassemble. Do it yourself plumbing repairs tend to make more sense when the understanding has been clarified.

Is It Jammed? check the reset button and clean

Electric Cord is shot? turn off power and pull elect cover, get whip and install

Leak at Drain Pipe? see drainage on other sink issues

Time To Replace? here’s a couple to check out