Buying a Mac is the only way if you want seamless fire transfer between iPadOS and desktops. For the price of an Android tablet you can just get a Mac. There are loads of cheap Macs to suit your needs. There’s the M2 Mac Mini at the unbelievable price tag of $500. For $500 you have not just the best consumer desktop computer out there, but an excellent hub for your Apple Ecosystem
Alternatively if you want a new laptop there’s the M1 Macbook Air available for $800. There’s also the Macs in the Apple Refurbished Store.