Can you trade without fees?

Hello there, I'm curious about trading cryptocurrencies and I've come across the term "trading without fees." Could you please elaborate on this concept? Is it truly possible to execute trades without any fees being involved? If so, how does this work and what platforms or exchanges offer this service? Additionally, are there any potential drawbacks or limitations to trading without fees that investors should be aware of? Thank you for your time and assistance in clarifying this matter.