Any suggestions on where to go next? Extremely anxious and depressed.

I'm 41, first panick attack at 16, first depression episode at 18.. Been on many antidepressants (Cipramil, Aurorix, Zoloft) also Lithium .. Lexapro worked finally for me when I was 29 at 20mg a day. along with Sotalol beta blocker. In 2014 I was fed up with the Lexapro, I felt like I was too high most of the time and felt I have become somewhat stupid in dealing with people, felt like a laughing stock to even my closest friends! I started tampering down to 15mg daily in the hope of completely stopping, that's when anxiety spiked and I was getting panic attacks more regularly, always thinking about my heart and having palpitations and trouble breathing. After 4 months the panic attacks subsided a little, I could bare them more now. But was too afraid of cutting down to 10mg of Lexapro, so I stayed on 15mg until the end of 2016. Beginning of 2017 is when I had a major panic attack and called an ambulance and went to ER as I did many times before in the past. The panic attacks were more frequent now, very scary and with them arrived the almost forgotten feeling I had, depression, it came and hit me hard and stopped me from feeling alive!! I attempted to get beck to 20mg Lexapro but that made me feel physically sick and panicky. I decided to cut it to 10mg, then 5 mg. Went to the ER more times, always dismissed as anxiety. A doctor prescribed me a Benzodiazepine called Temazepam, felt much better on it but after waking up the fatigue and low mood were unbearable. I also was afraid of becoming addicted to a "benzo".. A psychiatric from a community centre insisted I go back to 10mg Lexapro, I did and it started to work a little better on my depression, also after research I took Vitamin D3 daily and was surprised at how it gave me some energy and lifted my mood substantially.... Long story short here I am now in 2021 after tampering with Lexapro and down to 5mg a day, went to zero for 4 days and got really terrible withdrawals, I'm stuck at 5mg with bouts of depression and continuous and relentless anxiety in which I take a Valium once a week. I'm fighting the last battle against Lexapro now in the hope of getting free from it after 12 years of dependency. It has been a daily struggle for 2 months now being on only 5mg.. Many times I feel lost and so confused like in a dream Tried to start Faverine and felt ill, tried Mirtazepine and no luck, my body rejected them from one dose, all I got are terrible side effects that kept me busy for 24 hrs and that's it. I don't know what's next for me! My body feels tired, always afraid and thinking about the end!