Be careful with this. I am an atheist, and by no means am I adamantly defending Hinduism. But the translated Hindu scriptures are mostly over a hundred years old. Most such translations carry heavy biases. Quite a lot of of the time, the translation says what the translator wants it to say. If you have a personal affinity for some of the translators at sacred-texts.com, or if you want a historical perspective of tran…
All translations are lossy. So why not read the original? Granted, Sanskrit is not easy. But it's not insurmountably difficult either especially for a person of Indian origin. And the language of the epics (of which the Gita is a part) is generally a lot simpler than in e.g. kavyas or technical shastras. A few months is long enough to pick up enough understanding of grammar and along with a dictionary you should be able to work through the relatively short Gita quite quickly. Yes, this is still much slower than reading a translation but if you're goal is avoiding commentorial bias this is the only rational way to go.