Set the brightness automatically and it will adjust according to the ambient light. Leaving 10,000 lumens in the dead of night is already harmful to your eyes. If you turn the brightness down or on manually after doing this automatically, it will disable the automatic adjustment and you will need to turn the automatic brightness off and on.
Rechargeable batteries are not immortal and if not well cared for, they will become sick and cycle efficiency will decrease. Lithium-ion batteries inevitably lose 20% of power each year and are incredibly prone to becoming even more inefficient.
In other words, your charge that lasts 10 hours will last 8 hours after 1 year, no matter how well you take care of it. Being able to charge the phone whenever you want is more of a disadvantage than an advantage. As much as possible, do not charge the phone until it runs out of charge and turns off. Even if you cannot keep this rhythm, try to do this frequently. When you have 80% charge, don't say "I'm going out, I'll put it on and get it to 100". Let the battery run out and turn off for a while, then plug it into the charger. This also applies to the laptop battery.
Turn off 4g when you switch to wifi, and turn off wifi when you switch to 4g. Stay connected to the internet 24/7, but do not waste hardware energy.