My suggestion is to look which field or skill is easy and catches your attention. If you can do freelancing in web development than it has good scope but you need to learn advance level web development. If you want to do SEO, I will suggest to learn from Sir Tanveer Nandla or Sir Aamir Iqbal. You can also learn Google Ads and social media ads management because this skill has good jobs in Dubai and you can manage accounts by staying in Pakistan.

If your family can allow you to go for big jobs in foreign countries I will suggest to go in networking and system administration. My cousin is earning handsome amount from Python skill by doing job in a company in Lahore.

There are a lot of skills all depends on you which one attracts you. Web development is a good skill but you need to be very good in it to get orders as competition is increasing day by day.