The question "where to promote my website" has a long answer and a short one. The short one is: where the people who need you are already searching. The long one separates what works from what only takes up your time.
Works: Google Business Profile
For any business serving a specific area. Free, quick to set up, and it is what appears first in searches with local intent.
Works: search sites and catalogues in your field
There are search sites specialised in practically every sector. They bring visits and leave a link pointing to you, which is one of the criteria for who shows up first on Google. That is the work Magneth does in one go, publishing your listing across more than 100 search sites in the network.
Works: social media, with the link in the profile
The profile is the most stable place. A post has variable reach; the website field stays there for good.
Works: groups and communities
Facebook groups, WhatsApp communities, forums in your field. Worth it as long as you genuinely contribute.
Works: partners
Suppliers, customers, trade associations, the people you refer and the people who refer you. It is the easiest link to get and the most forgotten.
No longer works: comments on other people's blogs
Leaving your address in the comments of other sites was a common technique fifteen years ago. Today those links are marked in a way that passes no reputation, and the effort does not pay for itself.
Does not work: packages of a thousand links for a low price
A volume of bad links does not help and can hurt. The criterion was never quantity. On that, it is worth reading what are backlinks.
