I drew on various snocial media sites. I drew on various social media sites.

SNS isn't really used in English

Fortunately, some people see and react to my pictures, excludeing insta. Fortunately, some people see and react to my pictures, excluding insta.

Fortunately, some people see and react my pictures, excludeept on insta. Fortunately, people see and react my pictures, except on insta.

The "some" is implied and sounds better omitted.

There are too muchany creators , so I can't be found. There are too many creators , so I can't be found.

There are too muchany creators , so I can't be found. There are too many creators, so I can't be found.

"too much" is used for uncountable things (like "water", "rain") while "too many" is used for countable things.