Challenges in Audience List Sourcing for Asian Markets

Hey guys, I'm facing challenges when it comes to pulling audience list for ASIA countries (PH, MY, ID, TH, etc..) I do see decent amount of people on Sales Nav but Apollo list give me very low numbers. Additionally when I enrich those list in Clay I get an average 30-40% fill rate as opposed to 70-80% when doing countries like UK, US, CAN, etc... I know it's the nature of the market and the data available but I wanted to ask if any of you had workarounds. Cheers ! Happy festive season