Like the title says, Just talk about minecraft!
Welcome to the forum @Wolfe! Something I have been really enjoying was exploring the new nether update, I also really like how there are portals placed around the world.
Try putting this command in a repeating command block on Bedrock Edition:
/execute @e[type=<any projectile>] ~ ~ ~ setblock ~ ~-1 ~ stone
i don’t play bedrock edition