Unable to load the Website

loading fine for me

It's not loading properly for me

so you mean its loading but is slow?

your internet is the issue, not the website

It was acting a bit for half an hour but seems fine now

Is it possible that when the Website is loading for the first time it's slow but gets faster after a while?

very unlikely, especially if it doesn't have an external CMS

looks like is just static, so it would be always fast

most likely your internet is acting, not the website, recommend measuring your speed at the same time when you see something like this

That was the first thing I suspected but it wasn't the internet.

It may be not specifically your home internet, but the routing down the line, from your ISP

or the way you tested it was flawed, e.g. using https://fast.com/ is good but may be not representative