I say this as a practicing financial planner. Do a Masters of Taxation or something similar and move to accounting. You have a much wider opportunity in relation to work and a much better future than you would have in financial planning. Please note that the issues you advised remain relevant in accounting but there is much wider potential to get work, particularly in relation to corporate roles.

In other words what has happened to you, whilst negative and undoubtedly disappointing and hard to deal with from a mental health perspective, is actually a win for you in my opinion. I regret becoming a financial planner every single day and am comfortable this is not me - it is the industry / profession.