Don't take anything. Trust me, I've tried to substitute everything for opiates. If you can get into exercise that would be great for a natural high. What you're experiencing is totally normal. You might as well just go through it now because if you take anything to make it easier, it'll just be a temporary fix and eventually you'll be feeling the same. Just get through it. It may take months or a year. But see it through. There's another side that you WILL eventually come out of. If you don't do it now then you'll have to do it sometime later if you want to be clean.
I have 9.5 months off of opiates and I can promise you it'll get better. Give it a chance.
Oh and don't take kratom. That shit's evil.
great advice imo and congrats on the 9.5 months Man, that’s genuinely wonderful