Hello, I advise you to buy a Macbook Air. This is the lightest laptop in the Macbook line. With such a device, you will be very mobile and not worry about the extra weight of your laptop. I also advise you to buy a protective keyboard pad https://www.amazon.co.uk/dp/B09PLKV8GX . It will help protect your keys from sticking, which can occur due to grease and dust that you leave on the keyboard.