Yaffa Human Hair Wig

I purchased this Yaffa remy human hair wig online from Yaffa wigs in Brooklyn NY. it was supposed to be 120 density & probably is but as you can see this was done in a way that will show bald spaces in the back if you're in a breeze. I believe it could be fixed with added wefts. the bangs were also trimmed for me by same shop & need evening out. I can't remember color but I would guess #4 dark brown with a few subtle highlights. I'm hoping someone more knowable can fix the wefts or this could easily be worn as is .