I think most of the BCT members here are males and there are only few females here like me.
It doesn`t matter. Your gender doesn`t determine your abilities. Treat other participants (without regard to gender) as people you can learn from, and treat yourself, as someone who is capable of making a difference in the development of this forum.
I am not confident enough to get a good post and at the same time my english is also not that good.
Your English can always be improved. If you comprehend the goal and try, you`ll succeed. For most users of the forum, English isn`t the mother tongue. Nevertheless, many of them write interesting and useful posts. You need practice and the desire to improve the level of your language.
I worry with the current system that needs to get merit to rank up and probably i will be stuck on Jr. member rank.
If your goal is not to earn tokens in bounty campaigns, then your rank isn`t fundamental. The only thing that matters is the quality of your work. Other participants look at the constructiveness and usefulness of your posts, and not what you have written under the name.
... the only thing is that everytime i saw a legendary account i feel intimidated from my post in english since i know that those member are really doing well
You don`t need to be afraid of participants with higher ranks. The forum is created so that everyone can express their opinion. You learn, and making mistakes is normal. The main thing is that you learn and draw conclusions from your mistakes. Members with high rank will help you if they see your efforts and desire to learn.