Yes, safeness is important - which is why I suggest not thinking about it as “working out” or ending in weight loss - but rather, something to boost your frame of mind, attitude and happiness. Think about what being active does for you mentally rather than physically, etc.
I also failed to mention that I’m a huge advocate for Health at Every Size and encourage anyone struggling with the weight loss/disordered eating cycle of mental instability to check it out. It has been immensely helpful to me in a lot of ways