My question is, can I use the react framework with @spartacus storefront? this is because our frontend application is developed in React and we want to use @Spartacus storefront to leverage advantages like decoupling front-end and Hybris build ..etc. but as it is developed on angular I am not sure whether it supports other frameworks like React within it.
Spartacus needs Angular. So, I would say "NO", unless you want the complexity of integrating Angular with React.