Step 1: ( about my situations)

in such situations, I feel awkward and shy 

I don't feel like talking with some people

step 2:

how to start conversations :

1. greet them with Hello or hi , good afternoon or greetings
2. start the conversation with how are you doing or how is your day.
3. ask them about their favourite topic

Step 3:

tell them about your favourite hobby and ask what's theirs, too

give some humour in your conversation 

Step 4:

Maintain Eye Contact and use proper body language.

Use some rightful gestures