Here are a couple more for you
I would suggest you read up on all of these and find the one that suits you best.
If you get stuck, come back here and I’m sure that amongst the community we should be able to help you out.
Also some car projects will help because they are all the same principle.
Also the “Easy guard” may be a cheap and simple option for you.
There are a few on the forum
This one covers easy guard and a few others
If your bike has a proximity immobiliser installed, this workaround is a fantastic one
That should be more than enough to get you started