As far as your panic attacks, as you have been a JW for 50 years, you've had over 50 years of indoctrination and conditioning. You are not going to undue or turn that around immediately or even quickly. For me, even after more than a decade out, the JW conditioning continues to kick-in every so often.
Slow down and Breath and consider the reasons you left and what you have learned since leaving.
Any opposition now being experienced by WT and JWs as a whole, is mainly due to actions they have brought on themselves, not because it's the end of the world. Consider as one example, WT's continued refusal to appropriatly address child abuse within the organisation and the resulting implications with the Australian Royal Commission.