Struggled adverbs are provided in this article. The words listed here are commonly found along with the verb struggled in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb STRUGGLED.
academically, bravely, briefly, clearly, constantly, continually, daily
desperately, feebly, fiercely, finally, financially, frantically, furiously
futilely, gallantly, helplessly, heroically, ineffectually, initially, madly
manfully, mightily, nobly, painfully, really, slowly, successfully
unsuccessfully, uselessly, vainly, valiantly, vigorously, violently, weakly
wildly
Hope this word list had the struggled adverb you were looking for. In addition to adverbs used with struggled, other example verb adverb pairings can be found on this site.
You can help by adding more adverbs in the comments. Thanks.