Garageband does not support the Windows OS platform. There is good news. Yes, you do have better
Garageband alternatives for Windows. here is the Latest Alternatives of Garageband for Windows PC. Multi track recording software. I found this link that has some recommendations for PC based studio software. Looks like a couple of them even have free versions.
I don’t have first hand experience with any of them, but if you can get a decent free version, might be worth checking out.