Text going past page

I want it to automatically wrap paragraphs around the page just like other text editors like microsoft word. Is there any way to do this? maybe something I can add in the premable?

here’s my code for reference:

documentclass[12pt]{article}

usepackage{graphicx}
usepackage{amsmath, amssymb}
usepackage[margin=1.25in]{geometry}

setlength{parindent}{0pt}

begin{document}

tableofcontents
newpage

section{Test Section}

subsection{subsection test}
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end{document}