HCG is tricky. It acutely makes me horny after injecting, but the estrogen buildup can get pretty significant for me and also promote a softer noodle before long. So use it sparingly and/or consider you may need a little AI if you push enough.
Proviron is really user-friendly; you take it daily and it will drive libido and erection strength. If you are using 50mg or more, I would split the daily dose into 2 separate servings.
I have only used Deca, 3 times now. Clearing my system as I type this. I get some softer noodle on it unless test is way higher, or I run some Masteron, which always fixes that up.
If you have Proviron, I would run that for a month or whatever. But fair warning, just discontinuing that your libido probably won’t be as strong right after, because it’s an ever-moving target anyway and you just pulled out a solid DHT. But hopefully the soft erection issue will be resolved by then.
Also, a little tadalafil for a few weeks could be a solution to the bloodflow issue, separate from libido help.