Idk about your phone, mine never heats up that much playing warzone mobile (same phone A34) plus dont be too concerned about reaching 40-45c since thats the normal temp a phone can get when gaming intensive, even iphones and flagships samsung devices...

Can't tell if the cons here are legitimately true!As For The phone That is 1 year old now and a Bit optimizedLow light performance on camera Are as impressive as the A54 the only Downside is the Video performance on low light since the Camera itself ...

bruh Its exclusive on High end mid range Phones and flagships, My phone is literally a Galaxy A34 and it has circle to search feature..  

Its because your Phone M21, the processor itself cant handle or isnt fast enough to produce HDR photos On 48mp, try using A higher end Mid range devices Like A3x and Up