Ultimately, it’s absurd that looking for work involves wondering how many lies I can get away with. But that’s the game employers are playing, and honesty is not rewarded.
Don't think of it as lies. Think of it as "explaining what I was doing professionally, to learn, grow and strengthen my skill set during these periods of less active employment." Is glossing over the vast majority of your time that you spent living your life instead of hustling lying by omission? Maybe... but "I wasn't doing shit professionally because reasons" is not a message you want a potential employer to hear.
The other poster who said "never put anything on your resume you aren't prepared to answer questions about" is 100% right. Definitely think about what you're going to say, focus on the things you DID do, don't make up shit you DIDN'T do... resumes are supposed to be quick summaries anyway.