Rafshan , welcome to Upwork
(Preston it's Thursday and It qualifies as 'be nice to everyne day for me' , so pardon my solving Rafshan's assignment)
Rafshan , You might want to know upfront that you need to work hard and smartly ( or smartly and hard which ever way you prefer ) on this platform.
Your first mission , should you choose to accept and which you have obviously accepted is to land your first job.
But that is not your first mission .
Your first mission is to read this post thoroughly and practice the information / advice outlined.
It's a long read ( details , details , :-) ) , but it should be worth your while.
Wishing you all the best,