I graduated with a bachelors in computer science around 4 years ago. Long story short, I was depressed, dysphoric, and suicidal throughout my college years and by the time I finished I didn’t want to do anything. I’ve been unemployed for the last 4 years but I’ve also transitioned, started taking better care of myself, and overall I feel much better.
Anyways, I need to get a job now. What kind of lies can I get away with on my resume to cover up the long period of unemployment? Should I pretend I started some sort of company and it failed? Pretend like I went on some backpacking journey in a foreign country? Do companies even check all this stuff?
I did do an internship at a big tech company several years ago, and I’m working on personal software projects so I can put that on my resume. Also, I’m in Amerikkka.
Sorry if this question has been asked here before 
You can claim self employment, contract work, jobs with companies that have gone bust, and/or expand your claimed experience within a job and say you signed an NDA (eg Military), and there's practically no way for a company to prove or disprove it.
My personal rule is that I never lie about being able to do something I cannot. When I say I'll work with something, I might not have all the experience I claim, but I know I can do the work.