I'm new around here and just read through your posts. Have you ever tried yoga? I've found it to be very relaxing for both the body and mind. No need to go to a yoga studio, there's plenty of videos on YouTube so you can do it at home.
I can relate to losing your dog/best friend. I lost my cat and best friend Buddy to cancer 7 years ago when he was just 5 years old. I still cry over losing him. Hell, I am now just thinking about it. That unconditional love is so special and losing that is devastating. After it happened, I had to take a week off of work because I was a mess.
As for money troubles, I can relate there too. No one ever taught me about money. As a result, I managed to rack up a ridiculous amount of debt throughout my twenties and into my early thirties. On top of that, my employer told me that I needed to get a degree in order to move up in the company. So here I was, now in my mid thirties and asked to take on more debt! I did it and then became such an anxious mess that I'm pretty sure I lost my mind for a good year. I was surrounded by such toxic people, at work and outside of work, that I couldn't even think straight. I worried about my debt constantly. I'd sit and cry over it and felt like such a failure.
I finally got to a point where I was so beaten down that I just decided to stop thinking about it. I had a mess to clean up and there was nothing I could do to change it so I just did what I could. As soon as I stopped worrying about it and thinking about how I was going to pay everything off, it's like the fog lifted from me. Things started to fall into place in my life and I started to get rid of all the toxic people in my life. I started practicing the power of positivity and never looked back. That will happen for you too! It will get better! Amplify the positive things in your life, big and small.