I need help of which blocks an player CAN'T respawn on (in bedrock edition.)

Im making an map for an future video (once i free up my space.) And im encountering a problem where im respawning not on the spot where im not supposed to respawn on. (Aka out of bounds) I've looked on the internet to find which ones to use when respawning the player but the answers are mod related and im looking for blocks PLAYERS can't respawn on.