my strategy when playing a dice is i would place all my money only for 1 single bet and bet for roll under 49.50
sometimes it does working for me but often also lost my money

are you mean is first bet/roll ?
it's too risky, chances 50:50 I will not waste my money for it
Anyway all of gambling is risky but if you can win it you will earn more. But this is how gambling is 50 50 chance is better rather than 80 20 or 70 30 because let say if you lose on this you will busted all your basebet and if you win you just get 20% of your base bet that means you need to play it 5 times to double your balance but with 50% chances this is one time to press only, depends on your luck whether you can win it or not