Any comment on vono mentari? Will it sink after few years?

If you are using spring mattress initially, then that's one of the issues, and now that you're also having sleep issues of the foam mattress, is definitely due to something else.

This is my suggestion.. Just try it.

Turn OFF all electrical equipment and devices in the bedroom. Put your phone on Airplane mode if you use it as Alarm. Otherwise switching off completely. Do not charge phone in the bedroom. Do not watch TV, or video an hour before sleep ...!

Turn off your WIFI when going to sleep.

Do you live near an electrical high tension wire ( carrying electricity), or near a Power station? Or have Telco towers facing you?

This is part of my profession, and you exhibit most of the symptoms my clients have when they can't sleep. And it's not usually the case of the mattress, but the Electromagnetism in their homes.