Try to give you a concise answer in plain words, hoping to help you:
First, there is no "no cause and effect", but it can be done.
Second, through practice, we can seize the opportunity of "jumping out of the six divisions in the wheel of karma".
Three, Buddhism generally has the following three kinds:
1, pray for blessings and hope the Buddha will bless you.
2, seeking liberation, hoping to jump out of reincarnation.
3, compassion, hope to open wisdom and measure others.
The situation of 1 can be called "secular Buddhism", and you may belong to this situation. There is basically no strict "discipline" for such Buddhist disciples. So, although everything you do is to make a living and earn money to support your family, remember: the law of karma is the same for those who believe in Buddhism and those who don't believe in Buddhism, and for those who praise or criticize Buddhism. Therefore, it is recommended.
As for the second and third cases, they belong to the category of "professional practice" and have strict discipline. Of course, they are not allowed to engage in the "slaughter industry".