React.js Bug Fixing

I need help fixing two bugs in my React.js project.

Key Issues:
- Functionality errors
- A button press does not pass the value to the next page and trigger the expected action.
- Demo values should be removed from the sidebar
- Navigation problems on the side bar of the project
- Side bar for arabic language doe not disspaer when clicked
- Side bar does not dissapear when it a link on the bottun is clicked
- On the Dark mode selct button is still light

Ideal skills and experience:
- Proficiency in React.js
- Strong understanding of state management and routing
- Experience with debugging and fixing functionality errors

Please provide your approach and estimated time to complete.