Can I change Java heap size on Android devices?

I have a Samsung Galaxy A20s with Android 11 and 2790 MB RAM. The phone was originally designed for Android 9.0 but now that it's been upgraded to 11; it's become slow and my RAM is always almost full and the [Droid Hardware Info](https://play.google.com/store/apps/details?id=com.inkwired.droidinfo) app says my Java Heap is 192 MB. is there any way I could change the heap size? It's way too high for my A20s.