The game crashes excessively (seriously excessively) and makes the the world corrupted

I’ve been playing Minecraft on this server for less than four months and recently I’ve noticed the game crashes excessively to the point where it’s almost unplayable I know it’s not my PlayStation because I have a PlayStation 4 Pro and everything is up-to-date and I take very good care of it it has nothing to do with storage size because we only have a 1000 MB of storage so not very much and I know it’s not Wi-Fi problems because I have unlimited fast speed data on Xfinity.  When my friend joins the world gets incredibly laggy to the point where blocks won’t appear the world won’t load and then all of a sudden it says my game is corrupted and everything turns black and purple if I restart Minecraft it goes back to normal for a bit then everything happens over and over and over again it’s a terrible bug and makes the game unplayable