Don't worry very much; quality of compositions and reviews (in terms of number and depth) do not correlate, so I would not take that as a reliable indicator of either crapiness or excellence. Participating in the forums and reviewing contributions by your peers will increase your chances of attracting reviews, but there are also members new and old who do not review and do not engage in the forums or in the shoutbox but quite consistently get reviews. Those write music that is either compelling, attractive or competently written, or the polar opposite (generic, derivative, insipid or just plain bad). Being a troll also helps you getting reviews, apparently.
I notice you have reviewed quite a few works here; if you did not get reviewed back it might be because you did not pick the right people (trolls, people who do not stay, people who lack knowledge to review back meaningfully and so forth). Or it might be because your music is just average (not good, original or engaging enough or not crude enough). Or because you did not provide a score.
To sum up, here are some tips that might help you boost your review income. Use them alone or combined:
1) Become a troll
2) Write compelling, interesting music
3) Write thoroughly incompetent, random and crude music
4) Write a soliloquy
5) Write a convincing style copy
6) Write for an unusual instrument or ensemble
7) Write something using cool concepts such as porous isorhythms, extended microtones, spectral counterpoint and non-euclidean time signatures
8) Always provide a score
9) Review critically works by other members. Choose wisely.
Welcome to YC and best wishes!