Should I create my website myself

Sure.  Why not.  If you have the time, the skills and the motivation.

There are free web creation tools out there, and free hosting.

But it's a bit like asking whether you should build your own house.  Or your own boat.  Or make your own clothes. Some people have the time or aptitude for it, some dont. Most people are comfortable changing a tap washer, but not plumbing a whole building - its the same thing.

We'd recommend getting a professional to do it if your business or other cause depends on it.