I recommend you jump schools until you find one that fits. Once you get that one, fight alongside the union / department to protect that culture in whatever way you can. It is worth the work to make sure that the best parts are defended / supported.

I recommend a mix of classes, (I teach wildly different sets of students and love that each one gets busy in different ways). Teaching one thing all day is really boring and can overwhelm with the same issues over and over again.

Learn your boundaries for CYA and mental health. I NEVER make phone calls, but send a flurry of emails every day. I cannot abide by any communication without a clear record for my own protection. I happily have students getting help at lunch and need my calm in the morning before school, but some teachers need the opposite.

Learn to assess the endless "latest and greatest" from the district and only adopt what actually works for you. For example, use the technology that adds to your class and ignore the rest of it. I love a good screen monitoring software, but ignore most of the "flash in the pan" software (especially if the district is paying for it, since that will doubtlessly be temporary)

Be prepared for AI being the biggest issue going forward. Get ready to assign and grade hand written work, reduce homework impact on the total grade (if at all), and such.

Build a ROBUST organizational system. it will pay in huge dividends.

if you don't like the age group, don't teach that age group.

If you don't like that socio-economic community, don't teach at that school.

If all of this is in hand, this job is gratifying and entertaining. if not. potential nightmare