Four years of running a SaaS in a competitive market

TBH, I find it extremely hard to acquire customers. Even with a rock solid product that is NOT, in any way, below the competition. I get the visits but the signups are non existent. Probably because my audience is geared towards programmers and tech oriented businesses. I can do almost any project but marketing kills me.

Can you share your experience regarding marketing? Any specific courses you'd recommend, channels you tried and what worked or didn't? I have posted on Twitter, mentioned my product in Reddit comments and also "showcased" it in some Discord servers. All that amounted to around 30 signups in 1 week. But this is not sustainable, and I would like to try some other avenues as well.

Not to be a buzzkill, but GP is sharing that they find marketing extremely difficult and it's not been working yet for them.

This would make them the last person to ask for recommendations (no offense intended).

It would seem preferable to seek advice/recommendations from people with a similar goal/situation to yours who are currently being successful at marketing their startup/product.