If you dont increase your steem power or get some upvotes on your videos they wont be staying up permanently either. I tried to upvote your videos but there are so many of them.
You came on to steem and used it in a really weird way. Steem power is very important here. You either need to earn some by posting or buy steem. Steem power is a really big deal as well, it gives you actual power on the platform to promote not only your own content but other peoples stuff as well. If you were to accumulate a decent chunk of steem power here, which I believe you could do very easily without spending even one dollar, you could become impossible to censor even if CNN decided to make an account here and they directly down voted your stuff.
edit : Someone like you Styx, you dont have to spend money to earn steem at all. All you need to do is spend a couple months just posting your regular content. At that point you will be able to backup all of your stuff for "free".
Make sure that you post in 50 / 50 mode. If you send the SBD you earn to an exchange and dtrade it for steem directly you will power up much faster.