Is our reality nouminal or phenomenal? Do we perceive actual reality or a simulation of reality of which our brain is the simulator. This is not to be confused with the simulation hypothesis (which postulates that the universe and everything in it, including ourselves, exists only as a simulation) or solipsism (which postulates that nothing outside the mind exists). This refers to indirect realism as first put forward by Emmanuel Kant in 1781.
Neurology seems to indicate that our (subjective) reality is phenomenal in nature. Whereas objective reality is nouminal in nature.
The reality in human nature is 'I am". 'I am that I am' is the meaning of 'Yehowa' the term for God in the old testament. Only after 'I am' appears in mind as the known does and known object appears as name and form with meaning in the mind. What appears in mind as consciousness is what 'stands under' the knower and all the known in mind. 'Understanding' is like super-consciousness which understands mind creation with knower and known in the mind. Super-consciousness is the sole reality. One knowing that reality is the realised, the saved by the Lord, the salvation. Purpose of human birth is that realisation. So say the Masters.
I think you meant noumenal. Which is the same meaning as phenomenal? I don't see the scope of choices to answer you. I can the only answer what your question provides. That is absolutely not. We do not live in a phenomenon based reality. We often eager to assign phenomenon to things we don't understand. I assure you everything in our reality is and will be explained without the use of phenomenon.