Mendix is perfectly suitable to build on based on your previous hybrid app. Just add the native profile to the App → Navigation and start re-creating your Hybrid page as native pages.
To style your native apps: https://docs.mendix.com/refguide/native-styling-refguide/
Biggest difference is the styling of native pages is the using javascript. Takes some getting used to.
When you have recreated the pages that you need, remove the Hybrid profile.
If you later decide to add a PWA -profile, you can do so too. Mendix’ domain models and flows, rules, interfaces etcetera are indifferent of the profile. One of Mendix’ big plusses.