My minecraft bedrock realm server

recently when im playing on my minecraft bedrock relam server i play on with my friends and brothers, ive been getting some parts of my world go missing and some parts of my world have glitches like chunk errors.

And i really dont want to start a new world because ive had this world for 2 years now and i dont want to lose all my progress and builds ive made on that world, so i really hope this can be fixed.