Normal above 0 iron not spawning...

Iron isnt spawning at all for me, with xray and spectator and night vision i havent found ANY ay y 32 or 36 where the graph clearly says there is, even then i went from y 0 to above and couldent find any iron, i could only find iron below 0 in deepslate, no other type of iron, PLEASE FIX THIS MAJOR BUG ITS UNPLAYABLE WITHOUT SURFACE IRON