Aging women feeling young

I am a 55 year old women who was let go of a mediocre job in February 2020. Just before the shut down of Covid 19. I truly enjoyed my job and the people I worked with. I worked hard with low pay with the impression of a promotion in the company. Haha I guess not. Now I am unemployed and middle aged but not bitter. Well for the most part. I understand bring the young into the work force but I do not understand discarding, shale we say the mature and experienced. This to me shows a lack of diversity as far as age. At least for this particular company the youngest of the young seem to be the only ones getting promoted and all of us of a certain age are overlooked. My strategy to get through this very unexpected breakup was to take It on the chin. I thought , I’ll get a better job where I am appreciated for the hard working eager to learn woman I am. Then reality sunk in. I am a 55 year old women who for most of her life was a homemaker for my husband and 3 kids with the exception of the last 7 years in this mediocre job. Yes I do now have some experience in the work force but that does not change the fact of my age and oh, did I mention I have metastasize breast cancer which traveled to my brain and lymph nodes? Ahh yes cancer is a bad word while looking for a job. How do you explain you’ve been fired from your last job (again mediocre job) and by the way I’ve been diagnosed with stage 4 cancer? But not to worry I’m only 55. Alls I can do is laugh at myself. Well all that being said my brain tumor that had metastasized from my breast was Surgically removed in November 2019 and with on going treatment and the grace of God some may call me a walking and working miracle. I feel great, I feel young and energetic , I feel hopeful and blessed. I just feel I have so much to offer but not quite sure how to jump threw the hoops with all my baggage.