There is a very simple and effective way to fix your aileron problem.

Drill a hole where the black dot is. The arrow points to the dot.
The hole can go through the aileron or not. It just needs to reach the torque rod (the aileron actuating rod). You can drill a couple of holes if you like.

Use medium CA and squeeze enough into the hole to fill the wallowed out opening around that torque rod end that you can now see.

Hold the aileron in alignment until the CA kicks.

You're done.

OK, you need to cover that little hole with something and then you're done.

CA is awesome in what it can do for you. It will soak into the wood around that area and make it strong enough to stand the forces that wood faced and failed to withstand. And it will fill the opening inside that aileron. And you'll have a nice rigid connection now, and it took what? One or two minutes? OK, three.

A couple of details before you do this..................
Turn on the TX and RX and center the aileron stick and trim. You want the CA to freeze that torque rod in the aileron with the aileron centered so you won't have to retrim the rigging or the airplane.