What is the ruling on participating in online competitions where the winner receives huge prizes and large sums of money, knowing that the participant in them is either a gainer or safe?

It is permissible to participate in online competitions if the contestant does not pay any money, so that they lose nothing, as gambling and Maysir (games of chance) are absent in this case. It is stipulated that the questions must be free from prohibited matters such as pornography or music.