Though is a dry coughing and fever comes and goes gradually with the use of ibuprofen. should i use other medications besides ibuprofen or just drink water and rest?

Virus: A viral illness, whether the flu or other virus, can present like this. There is no need to treat the fever in most cases. Rest and time are the usual treatment.

Symptomatic issues: Fever & cough are common symptom patterns that will self correct as a simple viral illness passes. If you feel treating either with meds helps you are welcome to do so. Cough does have some benefit in removing mucus & debris from deep in the lung. Fever helps you circulate natural antibodies by increasing pulse. If it doesn't bother you much you don't need to treat either symptom.