I think series x is a good alternative for ps5, it may be better but I don't think xbox wins easily, especially in Malaysia.
I think series S is a good option if you only play games like FIFA. Not really worth it to upgrade from PS4.

Series x is selling for 2.4k from reseller without official Microsoft Malaysia support and warranty. There's no official Gamepass for Xbox for Malaysia so you would need to buy from different region etc. Meaning we are bound to whatever Microsoft may decide in the future. Example like Netflix which originally quite ok with people using VPN but now will try to stop people even sharing account.

What I'm trying to say here is there is some risk involved with buying xbox in Malaysia. It's not all rosy.

Anyway, seems like no one answer TS question.
You can demo PS5 at sony store around KL. If you go during non peak hours, you can play for long time without anyone bothering you. Then you can decide if its worth it to pay around 3k of scalper price for it in many reseller shop.