During umrah should I need to perform every fard Salah during the journey as well as from my hotel room as JAMM & KASR .then can I pray voluntary prayers such as sunnah before & after fard prayers,dhuha prayer,tarawhi ,witr during the journey as well as from my hotel room.
You should shorten your prayers in the hotel. In congregation, follow the Imam.
You should not pray the Sunnah of dhuhr, Maghrib and isha as Prophet ﷺ used to skip these while traveling. Other than that, you can pray as many voluntary prayers as you want.