What actually loads while you are waiting?
Each layer of a page waits on the one before it, which is why a light page can feel heavy.
When a game page opens slowly, the problem is rarely the game itself. What is slow is usually everything around the game: stylesheets, fonts, tracking scripts, and decorative images that are not needed to play. Understanding which layer is holding you up gives you better options than pressing reload until the line gives up.
The loading order on most pages runs like this: the HTML document first, then the stylesheet, then fonts, then scripts, and finally images and media. Each layer waits on the one before it in some situations, so a single stuck font can hold the whole page even when the game itself is no bigger than a postcard. That is why a page that looks light can feel heavy on a weak line.
The first thing you can check without tools is whether the page ships large decorative images. Open the page, hover the main image and read the file size if your browser shows it, or open the network panel in developer tools. If one decorative image runs past a few hundred kilobytes, that page is spending your time on something that does not help you play.
The second thing is custom fonts. A font loaded from an outside server is often the silent cause of text that stays unreadable for a few seconds. If you see blank text then a change of shape, the font arrived late and the whole page waited with it. Pages using system fonts do not have this problem at all.
The third thing is third-party scripts. Analytics, advertising and chat widgets all add network requests you never asked for. On a slow line every extra request means one more turn in the queue. A well-built game page keeps that list short on purpose, and you can spot the difference by counting how many separate domains appear in the network panel.
Once you know which layer is slow, your action becomes obvious. If decorative images are the cause, turn image loading off in your mobile browser and play with empty boxes instead. If fonts are the cause, wait once on the first load, because fonts are usually cached afterwards. If third-party scripts are the cause, a basic ad blocker cuts the number of waiting turns considerably.
One habit is worth keeping: open a game you like once, and leave that tab alive. The browser cache stores the same files, so a second load on the same day is almost always faster than the first. People who complain that a site is slow usually open and close the same tab ten times, paying the first-load cost ten times without noticing.