Dang, just watched a video today explaining why this sort of thing is a bad idea and cannot seem to find it now. It was by a trans man who specifically asked his doctor about trans men using T boosting supplements, and relaying the information his doctor provided.
The gist of it was:
A) T boosters will not work on trans men the way they work on cis men, because we don't have testicles.
B) Any effect they do have will not remotely compare to testosterone HRT.
C) T boosters can cause permanent liver damage, which is bad enough, but this may mean not being able to get on HRT later.
Basically it can cost quite a bit of money and best case scenario, not do what you need and waste the money, worst case scenario, totally screw you over.