Other Need help with ML Agents Training

I've been trying to train my ML Agent in a plane game where his main objective is just to follow the target plane I assign. I've trained it for days with different rewarding and punishment systems using Distance, Direction Vector and Dot products. Dot products produced the best results till now but it still doesn't follow the target plane. Here is my code with everything related to this ML Model: https://hastebin.com/share/reyokequse.csharp and this is my config file: https://hastebin.com/share/cojojudeja.yaml

I would really appreciate some help! Thank youu

 

Here is a tutorial one that does a similar thing, chases a target, the fish.
https://www.immersivelimit.com/tutorials/reinforcement-learning-penguins-part-1-unity-ml-agents