What is my overseas Hardware and how to Flash it?

My phone was bought online and it came from overseas. Various **benchmarks** have determined that my phone's Android system and hardware ***does not*** match the description given on the site or the About Phone section. The **About Phone** section says my system is an ***Android 10*** and that I'm running an **eight core processor** with 12 gigs of RAM and 512 gigs of an internal storage. The various benchmarks determines that I'm running **Android 8.1**. That I have less than 1 gig of RAM and only 8 gigs of internal storage and a ***4 core processor***. I cannot get a clear-cut picture of my entire system to be able to **Flash** it properly. Is there an app or a website system that isn't going to charge me, that can determine any of the specifics that I need so that I can Flash a new ROM or Find and Flash for me? I have done every possible search that I know of considering that I am not all that fluent with this area. Most of the benchmarks say that I'm running an ***Alps manufactured machine.*** But I can't verify that they are the manufacturer or that they even have manufactured a phone. So I really need some help. Any help that can be given, I would be greatly appreciative