Dear Komila,
In the present world, the boss culture has faded, and the manager culture has also disappeared. Currently, the leader concept is becoming outdated, and the mentor concept is gaining traction in all industries. However, in practice, these concepts are only implemented on paper.
There is a saying, "Survival of the Fittest." You must adapt yourself to the work culture and behavioral norms adopted in your company to survive.
If someone criticizes you, it means you are growing in that organization. Take the essence of the criticism and work on improving yourself.
First, learn the work and try to do it yourself. Only when you become a master in your work can you teach others, and your subordinates will also listen to you.
Every morning, practice some yoga to keep your mind calm throughout the day. If you face difficulty in understanding the nature of work, do not hesitate to inquire about it with your immediate boss. Asking a question may cause momentary shame, but not asking will lead to shame every time you are given instructions. The initial period can be tough in any company, and your colleagues may see you as a competitor.
Remember, except for you, no one can demotivate or hurt you. Never allow anyone to bring you down.
Wishing you all the success and the best, dear.