How do you change to ordinary safe in Roblox

With all my experience with Roblox, I don't think you can change to safe mode. If you have already made your account 13+, you can't. It thinks your are 13+ and you can't change your age. So, you can't chane to safe mode on Roblox. Sorry.
~9tailedfox21 (a.k.a. PrimalBlade or cloner6348 on Roblox)