Building a tech business is very hard these days if you're doing it as a technical founder.

Almost everything with clear use has been built. You can make slight improvements to existing products here and there but you'll struggle to be ranked well in search because you'll find there's typically at least 10-20 direct competitors which have been doing what you're doing for way longer. Additionally today Google is more or less an ad search platform rather than a website search tool, which means even if you could just do some SEO and get on the front page, you'll always place below the ads anyway.

In my experience these days you need to be reasonably good and sales and marketing to start a successful business online. Generally that will mean you need a good ad strategy and you need to be able to convert those who click your ads, which will mean you need to aggressively pursue leads.

Another thing that can work if you're b2b is having a good network to sale into to. If you have a few contacts in corporations you can sign a couple contracts then you're good.

This isn't 2008 anymore. You can't just launch some random thing online, do a little SEO and be ranked at the top of Google with only 1-2 viable competitors. You need a good sales and marketing strategy.

it's not like this. You need a very good product that solves a real pain much better than competitors and word of mouth will work wonders with a little marketing push.