Well, it depends on its availability. It could be available on consoles like the Nintendo Switch if it has been ported there. Another option is to search for it on digital marketplaces for mobile devices, like the App Store for iOS or Google Play for Android, if it has a mobile version. Social media groups or forums related to visual novels can also be a good place to ask for information on where to find it.
You can try looking for it on popular gaming platforms such as Steam. They often have a wide range of visual novels available.
Some dedicated visual novel websites might also have'mydearest visual novel'. Check out sites that specialize in indie games or visual novels in particular. However, make sure the source is legal and safe. You can also search on official game developers' websites. Sometimes they sell or distribute their games directly from their own platforms.