Free will is the opposite of something set in stone. People shift and change moods, mindsets, directions all the time, which also changes outcomes on countless things big and small. A couple can start a marriage believing they utterly love that person and will spend their whole lives devoted to them, but a couple years later no-longer can stand them. Free will just means we are not locked to some single pre-destined result outside of our choice and control. We have the ability to change our minds, feelings, choices etc... and so do other people. Which is why things can change course. Lots of religions and philosophy delve into these aspects of free will. It is also why spells and curses and all that hocus pocus is bs. You can't take away another person's free will to choose, or lock down a single outcome to your desire. It also means if a reader tells you 100 percent something will happen, or gives impossible guarantees... that they are revealing they are lying/ fake. Those kind of promises completely defy the nature of free will. I trust readers who are honest about free will for this reason, and a good reader will spell out to you different paths and outcomes based on different options and choices you have. Because our choices do matter, and do change things. People don't like to hear that I know. How horrible would it be if we DIDN'T have free will, or any choice for ourselves? This especially is the case when bad things happen such as crimes, abuse, accidents and so forth. It isn't because some ultimate power decided you were predestined/meant to suffer, it is because another human made their own choices to be bad and inflict harm. It would be horrible to live life thinking those things were "meant to happen". Free will isn't selective, it just applies to everyone and everything.
Maybe another way to consider it. In every day life we ourselves can see when it is not a good time to do something, or ask someone something. We wait for when people are in better moods, when things are better timing. For the fact taking action at bad times can harm results. Trying to address something with someone in a bad mood or who doesn't want to talk can make things worse. This is the same thing with readings. A reader may advise to wait or not wait for those very kind of reasons with what they see. Going against that advice can cause different results then what they said would happen if you followed the advice they provided. That doesn't mean the reader was wrong or bad, it means you did something else, and that shifted things. I have seen this happen MANY times for my own self over the years, on all types of situations. I have had readers say if you do it this way, wait for this time such and such will result, and warn me if I do it another way a bad result will happen. My impatience has lead me to not listen, and have the exact bad results I was warned against. I have also followed advice and wanted to kiss the reader for helping me to navigate things at the right times, and ways.
I think for some people believing they can do what they want without recourse because things are set in stone.... is a way to not be accountable for personal actions, or consider the feelings, desires, and choices of others (and how that factors in).