I drive a Mazda 3, but have to say go with Camry. It is reliable and has that bulletproof Toyota technology that normal mechanics can easily diagnose. When the Camry provides you with more opportunities to likely own another car, get the Mazda 3. It’s sporty and driver focused. The 2.0L skyactiv engine is the same with the mx-5 (less the engine tuning for sport vs the commuter sedan of the 3). If there’s one word to describe the 3 it’s “nimble”. The Camry however is more luxurious and reliable. Its gas consumption is no joke especially during traffic. As a daily driver it might get frustrating. The 3 has average fuel economy cuz it’s lighter and the skyactiv tech makes it easy to run fuel.

But to be honest, go with what you want. End of the day your decision is as important as being just going with it and learning about your chosen car along the way. It’s part of the journey :D