On your website, do some very basic SEO (tags and other menial <head> content) (or something like medium? I self host everything)

You can then share links to posts at appropriate times and in appropriate context (like answering someone's question and giving them a place to learn more through a link, don't spam it around, always be genuinely helpful first)

keep in mind you are in a crowded market, lots of people try to build stock market tools, very few ever get used

My advice works better when you have a specialty or niche (generally specialties and niches do better)