Welcome to the Babble! Happy to have you decide to post and get involved.
I am not much of an authority on the topic of your discussion so I will let others contribute on that point. Personally I don't want to take time from writing to spend much time on SEO so I just do a little basic on page work on the keywords that fit with my topic (using Google's new planning tool which I personally find less satisfying than the old one frankly to choose the words that work best.) I do not look for topics that will reach people for earnings but topics that are needed to provide the best information on my project(s).
For a better experience here, check out our Guidelines and Forum Help in the top horizontal menu and at least listen to the video (better to read as well). You will find some interesting tips and information that you will want to know, such as signature requirements, etc.
Glad to have you join the forum, a great place to learn and share.