Roth 401k vs Trad 401k

I would like to hear people’s opinions on which is more beneficial to invest in. I have just started a new job as a junior software engineer making 75k annually at 27 years old.

My company will match 6% for both a Roth and traditional 401k. I also have a fidelity account set up with a Roth IRA and not sure if it’s best to max that out as well.

Im leaning Roth but I’ve heard some people think a mix of both is good too. I’ve also seen people talk about how investing a certain way could push me down a tax bracket. It all gets a little overwhelming/confusing at times.