How to get a remote job as an Android developer for UK based company/startups?

I have 6+ yoe with Android and I am applying to many posting from companies outside of India offering remote work on LinkedIn but I'm always getting rejections. They all have a generic response so I'm not sure if it's due to the resume or they in general are offering remote work but for developers from their country. Does anyone have any idea how to get a remote job for UK based firms? Or any other platform which has better success rate or any other strategy? TIA