There is no right or wrong, there is choice. Leverage is very fiat and usually leads to getting rekt. Occasionally the opposite, so if you can afford to lose what you are gambling with, good for you.

Debt is similar. The fiat system runs on debt. If you're in the club were your creditors never call the debt in, good luck to you. The other 99% of us should try to stay out of it.

Just my 2 sats worth

No leverage. No debt.

For me, the 1st rule is don’t invest more than you can afford to lose. Everyone has responsibilities and should act accordingly.