Several Ps4 controller only disconnecting on my ipad when i only go onto minecraft and works on other apps

This has happened to a alot of my ps4 controllers, I connect them to my ipad it works on games and as soon as i go onto minecraft it disconnects completely. Before this it was working fine, then it started to bug so I restarted my devide, reinstalled minecraft, checked for upates, restarted my controller, check and restarted bluetooth and settings, adjusted settings on minecraft and now nothing works. I just need to connect my controller to minecraft and for it to work please