I think you may want to just write about what you are passionate about. It's hard to tell what will be upvoted here. Crypto stuff seems popular, but it may be getting overdone. The platform needs variety to attract a large audience and that is happening, so I think any kind of article can do well here. If you write one that does not do as well as you might like, I would say, keep writing! If someone finds one of your articles of interest, they may look at your Blog page and find others. Best wishes!