I think I made some mistakes to all of my brushes somewhere in the settings. Some how say my brush size is 50. The brush will get smaller as I zoom in, and getting really huge when I zoom out. It doesn’t link with my camera. How can I fix it plz. Its very annoying
Click on the ‘Dynamic’ word within the Draw Size slider. This will turn off dynamic mode.
His reply wasn’t there when I typed mine 
Thanks so much for both of you. 
Im a happy man now