[subject] + 仍然 / 依然 + [verb phrase]
虽然 + [clause],[subject] + 仍然 + [verb phrase]
仍然 and 依然 mean "still": a situation has not changed, or it holds even though something might have changed it. They are the written counterpart of 还, and go in the same place, after the subject and before the verb.
The commonest use is the second half of a contrast: something happened, and the situation held anyway. 虽然, 尽管 or 但是 often set it up.
With a negative, 仍然 goes before 不 or 没有: the situation is still that something hasn't happened.
仍然 is the everyday written form. 依然 is more literary and often describes how a place, a person or a feeling has stayed the same. 仍 on its own is the shortest form, common in news.
Like 还, 仍然 sits after the subject. English "still" can move around; 仍然 can't come at the end, and it doesn't go before the subject.