They are not spirits... You are not doing things properly. For instance if you simply use a vps but connect the vps browser to a local 4g proxy, there is no way they will know. They will only know, if you use another account on the same browser without taking the necessary precautions.
Anyway, if you really want to get up to speed quickly, just use Multiloginapp, and save your self the headache. if you don't want to do that and you want to do it yourself , You can use Firefox patched with several stealth addons from their store. There are also custom browsers to do precisely what you want.
As per tracking your laptop, these are the main tools at their disposal...canvas , audiocontext, local stored objects, cookies. There is also webrtc and webgl. Most antidetect systems can handle these..but the tough ones are canvas and audiocontext. If you spoof canvas, they easily can tell its fake. If you dont, it ties all the accounts together -thats not bad in itself because many pcs worldwaide have the same canvas values. It only begins to be an issue if the accounts are behaving in an identifiable way that an AI engine can link together.Stay below the radar in terms of number of accounts and actions and you will be fine even with the same canvas values. There is a solution for this anyway, but thats for another day.
So you can check yourself what Amazon sees by visiting the following sites
www.browserleaks.com,
www.f.vision, and
https://privacycheck.sec.lrz.de/active/fp_ac/fp_audiocontext.html
The last one will test what they see for your audiocontext.. If the results are not identical with each profile you want to use for each account, there is no way they can tie the accounts together...just keep in mind, they are not spirits. What they know (internet specificatons), we know also.