Sounds like your real question is “how can I turn a low-spec laptop into a reasonable DAW without spending money “?

It wouldn’t use your current plugins, but you can run a decent DAW setup on a 2005 Mac running OS 9. So it can definitely be done on your current laptop. But to make it really work well, you’ll want to use period-appropriate software. So set up a state of the art DAW from 2011.

If you want modern tools, you’ll need modern hardware to run them; minimum 16GB RAM for starters. Linux is unfortunately probably a non-starter for you. Windows 11 or macOS will be necessary for working with the DRM’d components you’re accustomed to.