Well, according to some reviews I have read on the internet, Samsung Galaxy A71 is good in gaming. The Samsung Galaxy A71 is powered by a Qualcomm Snapdragon 730G octa-core processor, an Adreno 618 GPU, with flagship-level 8GB of RAM, and a roomy 128GB of onboard storage for all your games and media files. Maybe the problem there was your unstable connection when playing online games that cause troubles and frustrations.
well I have the Global variant, Galaxy A71 have 2 variants, the SD730G which is the Philippine variant and the SD730 which is the Global. I fixed my own problem anyway you need to install Game Plugins and reduce the graphics quality down to 50%, I'm in stable connection with 32ms ping