I was playing on my friend's server, mining in the nether using beds and had a netherite pickaxe, sword, and 4 pieces of ancient debris in my inventory. I unfortunately got trapped in lava and died. But, right before I died my game crashed. So, I logged back on asap. Drank fire resistance to get back my netherite tools. Only to discover they are gone. I'm pretty sure netherite tools don't burn in lava and it hadn't been 5 mins. I blocked off all sources of lava and looked everywhere around the area where I died. I found nothing. This might be caused by my game crashing or maybe the server reloading, but I have no idea what happened.