I was playing normally and I didn't see the (save icon) for while and the realm just crashed when I tried to rejoin but it wont let me in after 1 hour I joined and all my stuff disappear

the realm just crashed when I tried to rejoin but it wont let me in after 1 hour I joined i was on my bed with 0xp and all my stuff disappear and all the stuff I build and all my work just gone I searched everywhere and I found nothing the problem here is Im pretty sure i saw the save icon a lot of times