If you've ever tried to sleep in the Nether to set ur spawn there, ur not the only one who ended up dying to Intentional Game Design. Even though exploding beds can be pretty useful for killing dragons or other players on servers, when you actually wanted to set ur spawn in the Nether, that becomes quite a challenge without commands. However, the 1.16 Nether Update solved that problem by adding Respawn Anchors. You can craft one of these by sandwiching 3 glowstone blocks with 6 crying obsidian. Once made, place it down and charge it with 4 glowstone, and bam. You've set ur spawn in the Nether successfully. Do be warned tho, if u try doing this in the Overworld or in the End, you will explode the same way you do with beds.

I've included here two different templates: a fully charged respawn anchor and an empty one. Comment below if you want me to make the ones in between.

Credits: I got the textures from the Pixel Papercraft Block Generator: https://generators.pixelpapercraft.com/generator/minecraft-block

More info on Respawn Anchors: https://minecraft.fandom.com/wiki/Respawn_Anchor