Hey there, @algelaan. Thanks for reaching out to the Shopify Community with your question! It's nice to meet you.
If you're looking to be able to process payments that use Visa or Mastercard, then you're going to want to enable a supported, third-party payment provider in your store. We have a list of providers that have supported integrations with Shopify available for you at this link here.
Once you're determined what provider you want to use, you'll want to login to your admin, go to 'Settings > Payments' and then set up your third party gateway using the settings there. Let me know if you have any questions about this!
What markets outside of Pakistan are you hoping to sell to? I'd love to have a bit more information about your goals so I can provide you with more assistance! It would also be great to know more about your store! What sort of products do you sell? If you like, you can provide a link to your store for us here and we can jump in and see if we can provide you any actionable feedback!
Hope to hear from you soon!
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