Welcome to Bike Forums. Most road bikes don't do dirt/grass trails very well. Maybe you want a cyclocross bike or a hybrid.
Ask in the Road Cycling forum or the General Cycling forum.
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The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.