How do I improve myself as an employee in terms of growth and knowledge, if I do not receive any guidance from my seniors!?

Thank you Mostafa for your answer...will surely look into this!::)

First you have to set KPIs for your self

and never lose interview opportunity to check the market and know your value and gaps

contentious leading and socializing with specialist in your area will help you

read alot job description similar to your role to check what can be done more and also the requirements and etc...