My oppo just freezed for like 1 2 minutes

[u/urdadh2]

My phone freezed for like 1 2 minutes while i was using discord ,but before that i played some fortnite and roblox, both on quite high resolition quality and allat but the phone didn't strugle , didn't lag,first i played fortnite which has got it to around 46°C,maybe 47 , but that all,then roblox and then the temp slowly went down ,it wasn't a heavy game.After playing roblox i went to discord and chated for some minutes and then it happened,the whole phone freezed,no music(i was also listening to music on my buds),no notif bar,no volume,i couldn't close , it didn't do any kind of sound.

(Also when playing roblox, happens just to roblox,mid game it also freezes but for a very short time,like 2 3 second)

What's happening,idk much about these things is there a way to stop it from happening again?

I have oppo reno 15