It's hard to say what to improve without more details, but contract work should be high paying because of the uncertainty. Could be issues with your resume and/or interviewing skills. For the latter, you could try interviewing.io. Almost everyone underestimates the amount of practice required to get good, and they procrastinate until it's too late (just like with networking). Also sounds like you're a generalist, which will work against you.
I have a career course that should give you a ton of ideas to help, see my profile for details. If it's taking you that long to find a job, there are some fundamental issues with your strategy and tactics.
I have a career course that should give you a ton of ideas to help, see my profile for details. If it's taking you that long to find a job, there are some fundamental issues with your strategy and tactics.