Need help with decision paralysis

I have a story to share, it might be more common than I think it is or I could be the only developer experiencing this kind of decision paralysis. Either way, it's blocking me from releasing a SaaS for almost 3-4 years. I know something needs to be done to move forward with my aspiration of releasing a SaaS product. Any advice is more than welcome!

The story

I am a full-stack developer, most of my experience is in the JS ecosystem where I would rank my JS skills a 9.5/10. I feel very comfortable working with monorepos, FE, BE, tooling in general, and even deploying JS-related stuff (that includes typescript).

My goal is to build a SaaS product that will allow me to make a living one day. To reach this goal I have a series of requirements for the tech stack:

• The DevOps is simple, manageable, and predictable
• Adding features or debugging is easy and scalable (1 person army)
• It does not grow exponentially in complexity as the code-base grows
• Pricing of deploying and scaling is predictable with little overhead
• Allows for iterating over many different SaaS products in a fast and easy manner. It's very likely that my first attempts will not find a market fit.

The problem

As I mentioned, I am experienced with all things JS, so naturally, this was my first (and only choice) for some time. My stack of choice was Express, Mongo, and React (MERN).

I spent 4 months, developing a SaaS product. At some point, I built an API with a full auth-mechanism, and most of the business logic for the SaaS I was building. Now I only needed to connect a React FE and add payments. At that moment my motivation went from 100 to 0.
I had spent 4 months of summer developing only a part of the API, I could not see anything but some JSON responses in postman.

That's when I started reading about other success stories from bootstrap founders, I noticed something in common: most people used either a BaaS (firebase) or a full-stack MVC framework that is battle-tested, most likely django or rails.

I took a break and a few months later I was learning RoR. Took me a year to learn and build a SaaS (that I never launched) to lose my motivation again, I just wasn't as good at Ruby as I was with JS, plus building a modern FE was a bit of a pain (no reusable components), reactivity even with hotwire is more complicated than it needs to be IMO. So I pivoted again...

Now I am building another SaaS, A LOT of features are in place: subscription payments, teams, and business logic. But again I am starting to think about the future of this project, the stack that I chose is too trendy (burned too many tech cards), and how easy it was in Rails to add features - even though my approach was probably not the best according to the rails doctrine.

My ask

I can't keep on this track of pivoting between stacks, I really want to get something out there, register a company and be happy with the tech stack that I use, while maintaining my goals mentioned above. Has anyone experienced this? Am I too crazy or maybe afraid of releasing a product? What advice would you give me?

Note: my latest stack is SvelteKit/Supabase

Thanks for reading this long post.