All your products are extremely technical and target the worst market for first time founders - developers.
Developers, one of the most highly paid people in the world but also people who rather waste 4 weekends tinkering with something than pay you $5.
You need to solve business problems and I suggest build solutions for _non-technical_ people.
Find a business problem that's worth at least $99 p/m and niche down on it. E.g. do some research, speak with people, find manual/spreadsheet/data entry process in the business and automate it where possible.
It's better to have 100 customers paying you $99 p/m to make $10k MRR, rather than 2,000 customers paying you $5 p/m.
And it's not hard to sell $99 p/m product when you speak with business people and solve their problems.
You're also very technical, so I assume you have no sales skills or experience. You either need to find a business co-founder who'll do that, or be ready to reinvent yourself.
Also youtube around for Dan Martell, he's got a lot of great content from a few years ago around MVPs and early stage startups.