Stick concealer advice

So I have an oily skin, that’s why I shifted to stick foundation, I know it’s very old fashioned, no one use it nowadays. But I love it cause it does not oxidize. But here comes the issues that I have acne marks which that foundation does not hide. So I have to use a concealer. After applying concealer the point of stick foundation gets useless. As my liquid concealer itself oxidizes so much that whole faces gets 2 shades darker and oily. So I want a pot/stick/pancake concealer with good coverage, that I can buy in Pakistan. Because a lot of instagram pages sale fake international products