If you want to keep Safety Mode on permanently, you can lock it. Then every time you access YouTube from that browser, you'll automatically be signed in to Safety Mode.
Kama unataka kuweka Hali ya Usalama idumu, unaweza kuifunga. Kisha kila wakati unapofikia YouTube kutoka kivinjari hicho, moja kwa moja utaingia kwenye Hali ya Usalama.