Sorry to hear about the ordeal and your laptop.

Almost all newer aircraft nowadays allow you to adjust your tray table. I have always pulled the table toward me, and ensure my laptop is in a perpendicular position. When the passenger in front of me reclines, at most the seat would only change the position angle of my laptop.

While the laptop may no longer be usable, the data should still be intact and recoverable.

Also, is the damage computer an asset for work? Did the event happen while you are traveling for work? If both, check with your work folks, and their insurance may be able to provide reimbursement (not to you).