How to make phone use all available ram I have an Android phone that has 3gb of RAM available it uses nearly 1.4gb at boot up and max of 2gb on using chrome ,WhatsApp and Samsung Internet and when I switch to recent apps they restart  and that I hate because despite of having more than enough RAM my Android is unable to utilize it .Please help me in getting better ram management.
You can't force android to use all the RAM you have, all you can do is keep frequently used apps open i.e., don't clear them from recents so they should stay in memory and should open fast than launching when they were closed