Page not found error please Red the TOPIC

I want to tell that i deployed website it has 4 HTML pages but it is showing page not found.I tried almost everything…I also tried deploying to Github but it is only showing the name of the repository .Please help me .I made this website with a lot of effort.The link for Github is this…in Netlify deployment its just showing " Page Not Found" the URL is here.
I will be very glad if you help me.
The link of the github repository is this

hi there, please read this thread and follow the troubleshooting steps as outlined there and in the linked topics, thanks!

But my problems link is not there

Download the site, please, and post a screenshot confirming the existence in the root directory that is indicated in the build settings of your project, so we can rule that out first. thanks!