How to fine tune URL, logo, menu, and footer

I’m researching these items, but coming up short. New to CSS, but I’ve been successful in making some changes. Can anyone help me with these issues?

1. How do I change my homepage URL from https://nocotherapy.com to https://nocotherapy.com/NorthernColoradoTherapyServicesLLC? When I try Pages>All Pages>Welcome to Northern Colorado Therapy Services, LLC – Front Page>Edit the page URL is unchangeable from https://nocotherapy.com. Can I use Settings>General>WordPress Address (URL) or Site Address (URL) without messing anything else up?

2. How can I reduce the padding around my logo? I would like the header space to be fairly tight around the logo to allow for better first view of full front page.

3. How do I reduce the height of the main menu bar? When I added the following Custom CSS:

.menu-header {
max-height: 50 px;
}

I had a nice size bar, but then there was a shadow (container issue?) surrounding the selected page. I deleted the CSS I had added and returned it to prior status.

4. Is there a way to make the center footer box a clickable link to the Contact Page?

5. Is there a widget or plugin that would work well to allow for visitors to increase the font size if they have visual difficulties?

6. Lastly, when I try to add a small text widget containing contact info to the top right of the page, the box appears within the bootstrap slider. How do I insert contact info to the top right of the page?

Thank you so much for any help you can provide! I’m grateful!