Hello Nazim
As per your question.. is it that .. you want to change your domain ??
Well for students who have degree in hotel management can work and earn good further being in the same field with different/related sector. You can work in the below given zones:
1. Guest houses
2. Hotels and restaurants
3. Hotel and catering institutes
4. Hotel and tourism institutes
5. Airline catering and cabin services
6. Many catering departments like railways, banks.. army forces etc.
Hope this helps.!
Good Luck.!