Player Model Help!

So for a while now I’ve been trying to make a player model, I’ve been following the only tutorial I can find and EVERYONE recommends it but it’s a bit outdated and a few of the methods used in it dont work. So my problem is getting the model(obj, dae) to a half-life 2 format(mdl). I’ve been using XSI mod tool which as you know has no more support. This is a big problem, so if anyone knows a UPDATED tutorial on this kinda stuff please inform me, or if you are good could you make a tutorial on how to do this because I’m staring at a blank page right now.

p.s. Need to do this for a gamemode, doing this will finish it
p.s.s. these are the outdated tutorials: https://www.youtube.com/watch?v=sknm9_CuHps : https://www.youtube.com/watch?v=hjsstUqiUyY
p.s.s.s. thanks
-Drew