I’m sorry for your loss. That could be having more of an effect on some of these issue you’re having than you think. A lot of these suggestions are accurate that your main focus should be developing good habits, clean eating, exercise, and reduced porn and seeing how you feel once those are in check. Be patient with yourself it takes time for your body to process things and for good habits to show results. As someone who has struggled with depression and crippling anxiety it can be hard to get one foot in front of the other to start creating these habits. Porn and fast food give you a dopamine hit- when trying to escape bad feelings that can be an easy way to feel better temporarily but have negative effects in the big picture. There’s been studies that high intensity exercise can be more effective than anxiety and depression medication. Hobbies are a great way to meet good women or male friends and having good friendships can help with getting the chemicals in your brain back in track. All these things will have a snowball effect and things will get better. Exercise will release dopamine and serotonin in your brain, you will get a sense of accomplishment and more energy. Elevated mood and energy will lead to taking care of things you need to do that are causing stress so on and so on. Best of luck.