Beliefs are not things to be chosen like new clothes; authentic beliefs happen to us without our conscious attention.
I have often seen comments from ex-JWs to the effect that they are now unsure about what they 'ought' to believe. Others express offense when their chosen beliefs are challenged and well-meaning bystanders protest that everybody is entitled to believe whatever they wish. This misunderstanding of what it means to believe something is unhelpful.
It's natural to want to quickly replace our old beliefs when our worldview has collapsed around us. In reality it's a process that will take many years. Making conscious decisions about what we think we would like to believe is a sure way to restrict our growth and recovery from the cult.
Is the god of the bible worthy of worship? Is the bible inspired? Does prayer have any value? Why suffering? Is there life beyond physical death? Did life evolve by an unguided process, and if so does that rob life of meaning? What about moral questions regarding relationships, marriage, sex, abortion, child-rearing, politics, war, animal welfare, human rights and equality?
The only sensible thing to do is to keep acquiring knowledge by every means possible. Read great books. Listen to lectures and debates. Engage in honest debate to try our our current ideas see if they hold up to scrutiny. Seek out the very best presentation of positions that you don't feel attracted to, but don't waste too much time on every bizarre idea. Resist ideological tribes at all costs. Somebody from whom you learn useful things about science might be a total dullard in matters of ethics or politics. There are no gurus any more, don't replace one 'faithful slave' with another.
Be brave enough to begin from a position of uncertainty about big questions. Keep learning, questioning and challenging everything. With time and much effort our beliefs take care of themselves.