items that are not equipped disappear when i die near my bed

Could you provide a picture or video of where you are dying?

If you are falling to your death and the floor/ground where you land is only a block or 2 thick, your items could be falling through the floor.

it was in a ravine on 4 blocks and it was only the stuff that wasn't equipped, my armor and shield were the only things left and it only happens near my bed nowhere else

So you fell down a ravine and died? Inventory items and equipped items drop in different ways when you die, which can lead to one, or both, getting lost in an unexpected place. Have you tried digging down directly below the spot where you died to check for items?

I am going to have this ticket resolved as a duplicate of MCPE-48370. Please see that report for more information, and add your vote and any further information you may have. A picture of the spot would be very helpful.

Can you provide seed and coordinates too?

yes, I checked and there weren't any
seed:1850994951
coordinates: x: 1628, y: 14, z: -350

The coordinates you gave are directly above lava. Any item that touches lava will be destroyed (except a nether star). If you haven't cleared out all of the lava, then when you die by falling your inventory items could be dropping below your platform in the lava, as described in MCPE-48370 (Case C in the description.)

If you die in some other way there, then your inventory items could just be spreading out widely and landing in lava or getting carried into lava by the water flows around. Equipped items tend tend to not spread as far.

I placed four or five blocks of cobblestone above that lava though