I'm looking to set a table, however, I'm facing numerous issue. I hope you can help me out.
1) It overflows 2) font-size automatically reduces (2 Sentences are long and with line break it does not work. I'm sharing figure below: This is what I have

However, I didn't use line break command in the given figure, whereas, I used in MWE which is below:
\documentclass[journal]{IEEEtran}
\usepackage{tabularx}
\usepackage{graphicx}
\usepackage[utf8]{inputenc}
\usepackage{multirow}
\renewcommand{\q}[1]{``#1''}
\usepackage[usestackEOL]{stackengine}
\strutlongstacks{T}
\usepackage{makecell}
\usepackage{array}
\begin{table}[t]
\caption{anythings}
\renewcommand{\arraystretch}{1.8}
\begin{center}
\label{table_par}
\begin{tabular}{l|l l l l}
%{\textwidth}{*{1}{l|} *{4}{l|}}
\textbf{{\small Condition }} &fasfasdfafa %&\multicolumn{4}{c}{\textbf{\small jkhjhhk}}
\\
\hline\hline
\multirow{5}{*}{Smart system} &involves intelligent communication
technologyafdasfasfafdafsfonetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo one two two one\\
&two onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo one \\
&two onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo one\\
&two onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo one\\
&two onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo one\\
\hline
\multirow{5}{*}{two onetwo onetwo one} & \thead{two onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onevzcxvz,\\ ztwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo onetwo one \\one twoone one twoone one twoone one twoone one twoone } \\
&one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone \\
&one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone \\
&one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone \\
&one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone one twoone .
\\
\hline
\end{tabular}
\end{center}
\end{table}
\end{document}
I changed my code as per MWE given by @barbara! however, still problem persis, the only thing I changed arraystretch size and width of the first colum, can you look at again.



p{some length}orm{length}orb{length}or anXcolumn (fromtabularx) Cells in standard columns are single-lined. – Bernard Mar 20 '20 at 23:04vzcxvzxvzxvzxvzxvzcxvzxcvzxvzcxvzxvzvzxvzvzxzczcvzxvzvzvzcvzvzvzcvzvzvzvvvzvcvzvvzvvzvzvzvzvzvzxvzvzvzvzvzvzvzwill not wrap even in apcolumn. If your actual text is real words please change your example to something more likeone two three one two threeif it really is a long string as occurs in some subjects then different techniques are required – David Carlisle Mar 20 '20 at 23:08p(paragraph) column where a long text will naturally flow into the multiple lines of a paragraph. But long strings with no spaces may not break unless the hyphenation mechanism works ("vzcx..." doesn't have any hyphenation points in English), and paragraphs in very narrow columns almost always look better ragged right, where "extra" space is all on the right rather than stretched out in the middle of the line. (I hope this makes sense now.) – barbara beeton Mar 21 '20 at 00:11\multirowdo you want your contents to be vertically centered?... – leandriis Mar 22 '20 at 14:39