I understand you perfectly, although I would recommend that you do this more as a hobby than to please someone else. And regarding the second, I recommend that you make them wait; they must be patient. In fact, that's what Yakuza Merkitzi does(the guy who ports TF2 cosmetics from the TF2 workshop) . He makes it clear that they shouldn't insist because they're not his boss or anything like that.

What I can tell you is to take your time doing these things, in short, without getting overwhelmed in the process.

its not really hard i have smth i want to try but thats the thing, its not hard atall but im kinda forced into doing smth i havent done before and learn to do it myself cus i cant get a small bit of help cus it wasnt meant to please people

Oh, it's a shame you're not going to continue working on this. It's obviously very difficult to add physics to an SFM model in GMod. I'm really sorry.

By the way, I don't know if you could check it out, but I found another SFM add-on that has the scout without the backpack, although this one comes in a set of separate models in the same add-on along with other interesting ones (hopefully it has the default physics file):
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3562674868

Ok , that was fast :o