I am including two attachments: 1 from my desktop, but with the browser window reduced to match mu breakpoint for iPad, and the 2 from my iPad. You will see that on my desktop a navigation menu is showing, but it isnt on my iPad. The one I circled.
I am not sure what iPad version I have - I think 5, how do I check, but even moreso why the menu is not showing? I also tried inspecting from my iPad through my desktop, but in Safari I do not see my iPad as option.
I can suggest you to use Bootstrap so it will be compatible with browsers and devices.
Here is a free template that you can play with https://startbootstrap.com/template-overviews/freelancer/
If you have a budget you can get cheap & great template on https://themeforest.net/
If you plan to sell templates your website template must rock....