Woohoo :) Checked the admin today and saw that there are couple of users who signed up and created checks to monitor websites for changes. Moreover Google search console showed couple of searches my website appeared in. What I did 1) submitted the service into literally coupe of catalogs like alternativeto.net and alike. 2) Wrote a couple of articles on the website subject https://dwmon.com/posts/
Not bad at all. Now I can at least track my rank in SERP for my keywords.
Next steps: more content articles.
The bad thing - I begin to doubt whether I chose a good name for the service. DeepWebMonitor can be mistakenly associated with Dark Web, which is completely different thing to Deep Web and a domain name that was looking attractive because it was short now looks not that attractive to me - https://dwmon.com Well, will see if a name really matters. What do you think?