In your dream, you see a Buddha statue on the mountain, which shows that you are looking forward to a happy day.
You climb the mountain to worship Buddha, which means that you will eventually reach the other side of happiness through your own continuous efforts.
When I finally climbed to the top of the mountain, I was left alone ... which means that in the process of pursuing happiness or success, you will lose friends and feel temporarily lonely.
This dream should be understood as: you will make unremitting efforts in pursuing the happy life you yearn for and be active in all aspects of love and work. You will succeed in the end.
Now, you have shown your yearning for happiness, and you will take action from time to time. However, people around you, including your family, will have different views on this (because you dreamed of your grandmother). This is advice to tell you not to ignore your loved ones, and it is also a strong warning to look back and reflect on yourself. This is a dream that your grandmother talked to you and said a lot.
It's not good to dream about cats. It means that doing what you want will be criticized, sometimes it is a sign of financial ruin.
Then there is a hint: keep your family away from "water" and "cars" so as to be safe.
Generally speaking, it was a good dream!