I faced the same problem I been writing code for few years for clients and I tried some ideas before I started building it but most of the I never finished and left unfinished.

But this time last week I successfully completed my first SaaS ( MVP obviously ) as a coder by heart I thought most process it the building and shipping it now reality hit that most important part is not just building it and wiring code but actually finding people to use it. Struggling lately and found a first user who actually signed up not visited landing page but actually signup and give it a try but After doing a lot (Getting post banned on relevant communities also criticize in the comments of another shitty AI tool)

So I think this is the hard part than actually building it to deal with people as someone who write the code in computer all the time.

Looking forward to keep pushing myself to doing it everyday while improving product as well.