Solutions are displayed which match your selected specification «Don't know which platform I use».
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Search for a subscribe button or the RSS feed symbol
Usually, the RSS feed logo, or a subscribe button (which redirects to the RSS feed) are placed somewhere on the website (at the very top or the very bottom). Once you click on them, you should be redirected to the RSS feed.
There are ways to find which platform is being used, as there are "footprints" (evidence, clues) left behind by the platform. One way to find which platform you are using is through the view page source option.
You may access this option if you right-click anywhere on the website and select View page source, however, since there are many data available there, you might want to ask a friend who knows what and where to look for.