If you believe the police didn’t investigate your report adequately, you may consider filing a formal complaint with the police department. Most departments have a process for handling such complaints. You could pursue a civil case for the loss, however, pursuing legal action against the police is often costly and challenging and is likely not the best route in this case.

First, I would reach out to your insurance provider to report the theft and any damage. This could help you recover some of the damages, depending on your coverage.

If the individual who took your motorcycle has an estate with assets, you could pursue a a claim against the estate and recover damages. This would typically involve filing a claim in probate court, which could cover the value of your motorcycle and any other related losses.