Unable to remove Index.html from my Static website homepage hosted

I have installed a server using PHP static at Cloudways for my website, Tecbert.
Once after I completed web developing, also added htaccess file for removing index.html with the help of a developer. Still, it showing while if take any services and return to the homepage. While if we directly click on homepage it does not show, the problem is while returning to home.
Please, anybody, help me with correct htaccess file for this concern - make sure, this is an HTML website.
Website URL: https://tecbert.com/