It's not always too late to invest in bitcoins, if you have ever miss any Bitcoin bull run or you have heard about the bitcoins bull run and you are excited to take actions, my simple advice is, calm the pressure. This advice is driven from the view point of the economy struggles of many, avoid over thinking , work hard to earn money and diversify your investment. Most persons in the crypto space are dying in the inside because they do not have money to invest due to their present circumstance. If you do not have money to invest now, please ease the pressure, you may have more than enough to invest in the future. Calm the pressure my dear friends, don't borrow money, I repeat, don't borrow money to invest on Cryptocurrency, because it is a volatile asset. Life is about risk which you have heard countless times but it will be unwise to take loan to buy bitcoins.
I take trading as some sort of gambling, and even hodling Bitcoin could be seen as a bet too, due to political/legal uncertainties and price volatility. That said, the same bad mistake that would be to take a loan to gamble (incredible for many like is, but still too frequent) is to take a loan to trade or invest in crypto.
As you said, it would be better to make the effort and earn some spare money that you can use to invest, or if you don't have a job or it doesn't give you spare money you could even work for crypto in your free time, instead of doing other hobbies that would increase your expenses.