Let me tell you clearly each and every CIVIL ENGINEER has started a FRESH without any experience, so every engineer is a FRESHER at least you have studied the subject of CIVIL ENGINEERING so FULL MARKS TO YOU HERE.. SO DONT WORRY.
First of all, make a good resume some formats were shared by Mr. Dnyan Deshmukh could work as a guideline. ( search in this forum)
All these online portals do have the vacancies, however, what I feel from your comments is that currently there is no GOAL FIXED BY YOU i.e what exactly you want to be? a SITE ENGINEER , a BILLING ENGINEER, a QUANTITY SURVEYOR, a QC ENGINEER, a PLANNING ENGINEER, a SALES ENGINEER, a STRUCTURAL ENGINEER etc.
Once you decide on this, then I would suggest you based on your liking, first find out 10 companies which could have these vacancies and if they are within your vicinity then you can make a WALK-IN to their offices and meet the H.O.D and submit your RESUME.
You can try this with CLIENT FIRMS AS WELL AS CONTRACTORS. YOU WILL DEFINATELY GET A JOB AS LOT OF VACANCIES EXIST AT LOWER SALARIES so you can start off with a lower salary and gather experience. Once you gather the desired experience then Salary would not be an issue.
Even when you get a small-time job continue doing it and keep looking out for better options.
i have done my mtech from construction technology management but i dont know where i use it. - Civil4M go through this link it will be useful.
Good Luck