Generally, if your language is the big empire (for instance Chinese) it will contain few loanwords. If your language is isolated it will contain few loanwords. If your language is subordinate to a big empire (for instance anything that borders China) it will contain a sizable portion of loanwords. If your language is in close contact with some other language(s) it will contain a sizable portion of loanwords. Statistically.
tl;dr between 2%~70% traceable loanwords everything goes (there are very likely several languages outside this range but I suspect most fall in it), just pick something and figure out where you get your loans from.
Also welcome back, and don't be so melodramatic about everything.