How do you make yourself more attractive to women, without resorting to gym or buy expensive clothes.

I'm an introvert and socially anxious, and I pretty much dress the same with few clothes. Most of the time I spend time outside I try to be alone. Only recently I began to get calls/texts for hookups, but all my exs called me ugly. Even l've lost weight and got abs/puffy biceps, so it's just to put it short how do you improve your looks with minimum money and gym.