The right way to build multi platform apps in 2023 using web tech. ?

A framework for building native apps with React

There's also React Native that apparently takes care of both UI and native APIs.

Build truly native apps with JavaScript

There are layers that offer access to native APIs like capacitor, cordova and nativescript. Apparently sometimes multiple of them should be used, but I didn't understand what are the differences even after reading the announcement. These seem to be frontend agnostic technologies and Capacitor is apparently the more modern choice at the moment.

A front-end SDK to develop applications with HTML5 , CSS3 and JavaScript.

There are UI Kits like Quasar (Vue-only) and Ionic (React, Angular or Vue).

Platform for building native mobile applications using HTML, CSS and JavaScript

There are layers that offer access to native APIs like capacitor, cordova and nativescript. Apparently sometimes multiple of them should be used, but I didn't understand what are the differences even after reading the announcement. These seem to be frontend agnostic technologies and Capacitor is apparently the more modern choice at the moment.

An open source native runtime that makes it easy to build cross-platform apps that run equally well on iOS, Android, and the Web.

There are layers that offer access to native APIs like capacitor, cordova and nativescript. Apparently sometimes multiple of them should be used, but I didn't understand what are the differences even after reading the announcement. These seem to be frontend agnostic technologies and Capacitor is apparently the more modern choice at the moment.

Build beautiful native apps in record time 🚀

Another option is to use Flutter. I've never built anything with it but seems straightforward and it works on all platforms.