Start with people who already trust you

Your first paying clients often come from people who already know your work: a former manager now at another company, a classmate who started a business, a teacher who knows local firms, an agency you once interned at. They do not need to be convinced you exist; they only need to know what you now offer.

Send a short, personal message rather than a broadcast:

Hi Ayesha, I have started freelancing and I am focusing on booking
and payment features for clinics and salons. I just finished one for
a dental practice in Karachi that cut missed appointments.
If you hear of anyone with that problem, I would be grateful for an intro.

It names the niche, gives one piece of proof and asks for something small and specific. Follow up once, politely, and then leave it.