Multiple tracks are not normally done with the sound card. The computer and sound card are just the recorder (formerly tape machine) and the real production is done in increasingly more complicated sound mixers.
I don’t know if we reviewed any multiple-input sound cards, but you can start here.
https://forum.audacityteam.org/t/sound-card-reviews/8375/1
I personally have used one of these for multiple microphones…
http://www.peavey.com/products/browse.cfm/action/detail/item/115024/PV(R)%206.cfm
…but I am working with deskside PCs, Linux desksides, and Macs. All have analog Line-In connections. If you’re on a PC laptop, you’re stuck with a USB device.
Koz