The main benefit of super apps, and why it is so popular in those countries, is that it doesn't require users to download anything to use new feature. In some use cases I also found that so convenient.
Just as an example, WeChat has an ecosystem of mini-apps. When you go to a restaurant in China, you can often find QR code on each table. If you can that QR code, it would open a mini-apps that lets you place orders and make payments, without waiting for the waiter to serve you. A mini app is like a website that doesn't require download and storage on the phone, but the user experience feels more native and is tightly integrated with features available in WeChat. It would be much harder to get users if the same thing requires you download an app.