tbw of my AP0256Z in mac mini m2

I've been using Windows most of my life and switched to mac completely a month ago, and I have a few questions,

why does launchd use so much disk? how do I find out how long and which processes were causing this download? spotify also uses the disk, but I moved the cache to my hard drive, how do I find out which disk accounts for most of the load?

I have a mac mini on m2 with a 256 GB SSD, and I want to extend its service life, how do I do this? is there any information about my disk's tbw?

in one month of using a Mac, almost 3 TB of information was written to my disk, and I do not consider this normal, please tell me about your experience using this disk and how many terabytes it can withstand