How to burp baby

I have a 3.5 week old who hates burping. Every time I try to burp her on my lap while holding her face in a C cup, she will wriggle and cry. I tried to burp her over the shoulder too and she just won't burp.

I am exclusively breastfeeding and sometimes i have an overactive letdown where she will choke mid feed so I know burping is important. And I find that if she doesn't burp, she will squirm and try to fart and at night it gets worse (could it be colic?)

Please share some tips on how to burp baby and how to manage gassiness in babies also :(