How to use your machine completely with your keyboard?

Hello, developers.
Hope you all having a productive day.

So, I bought a new keyboard and I had to use a mouse along with it to be able to do some tasks on my machine.

Even though I have a pretty fast typing speed and I use plenty of shortcuts, switching back and forth from/to my mouse keeps slowing me down.

I wonder if I can completey use my machine only with my keyboard.
To freely navigate webpages on a browser (to quickly go to a specific position), code, use software like figma/photoshop that focus mainly on using a mouse, do daily tasks, ...

What shortcuts or tricks do you use the most to imporve your productivity and get away from your mouse/touchpad?

Your answers are highly appreciated. ^_^