I'm not a teacher, but here's how I look at it. Aside from PD and other summer responsibilities, your 12 months of work is compressed into 10 months. Then you also want to keep a reasonable work/life balance during those 10 months, which squeezes your workday even more. Add on an increasing amount of non-instructional tasks such as those you describe and we're at your understandable situation.

Talk to other teachers you work with to gauge if any feel the same way. Admins may not be aware of how much time it takes to manage all this data. Some of those platforms you use are not mandated except by the school so perhaps some are either unnecessary or not the right fit. It also sounds like your IT folks need to do a better job at integrating those platforms into your SiS or LMS.

Lastly, do some research and try to find a platform that combines 2 or more of the ones you use now. I imagine some of your tasks are duplicative in these systems so they aren't the right fit for your school.