Goq, “everyone” feels like a non-entity at some point for some time in their lives. Everyone goes through different nisyonos and some point in their lives. We are all tested and we all have to ride the waves and weather the storms. Everyone including me, I can write a book of all my ups and downs, or rather downs and ups. No one is immune.
However, if you feel that way you have two choices. You can choose to rise above it and not let it get to you. Or you can choose to find a job that is more satisfying and fulfilling for a man of your age. Maybe it is high time that you felt the urge of confidence and you looked for something where you felt respected and appreciated. In addition a job that paid better wages would definitely put you in a better position as far as shiduchim are concerned. After all you will have to support a wife and a family and working for a yeshiva, getting paid very little cannot put you in a position where that is going to be the most beneficial to do that.
In addition being surrounded by women all day is NOT the best sevivah for a man, do you agree? It must drive you crazy. I know you are used to it and probably have gotten very comfortable in your position but comfort isn’t everything. Sometimes you have to spread your wings and fly and this might be the right time and the right impetus for you to try. You know the saying “meshaneh makom meshaneh mazel”. That is really something to think about.