Wifi signal and lag even with good ping 46-40 ms

trjgd3ehrzt9​ 
It needs to be mentioned that your phone was released a few years ago (2020), and it still uses Snapdragon 720G, thats an ancient chipset using 8nm tech, no longer supported. So while Pulsar's guide is spot on for newer phones, it will not really help you. Time to upgrade if you don't want stuttering frames, as this ain't getting fixed and the game definitely will not be re-optimised for ancient tech.