Ask HN: How do you search for jobs?

About 3 or 4 years into my career and I've decided to look for a new positions. Unfortunately, in the past few years I got really jaded and depressed and never bothered to enhance / modernize my skillset. I've been working with .NET the past couple years, but I haven't done much .NET core or worked with cloud technologies or a lot of other necessary stuff nowadays. Very recently, I've managed to regain my ambition and have been working on learning stuff that's much more interesting to me, but I'm far from skilled enough to get a job in that stuff. Looking on different boards, the jobs I'm actually qualified for look terribly boring or like they would be a negative experience altogether (I'm not trying to work somewhere with outdated tech for another few years)

I've heard the just mass applying to online positions on such (which Is what I normally do) is bad and that it doesn't often lead to a great job, but I have no ideas what else to do. I get recruiter spam, but always for A) really bad contracts or B) jobs that look good, but had the recruiter taken even a cursor look at my resume, they'd have been able to tell I'm not remotely qualified for the position. What other ways are options for finding new jobs?