I always do my own oil changes. I have never used a magnetic drain plug. Are you seeing metal shavings on your oil drain plug? If shavings are floating in the oil, I suspect an oil filter takes care of them.
I've been doing my own oil changes since the late 1970s. My 2017 Mirage has been the first vehicle that I added a Fumoto oil drain valve. I liked it enough to buy one for my 2011 Forester.