Hello SharePointers,

Modern pages doesn’t support adding images in a table using text web part. To achieve that, We can use the below Pnp Powershell

Connect-PnPOnline -Url https://mysites.sharepoint.com/sites/Test -Credentials (Get-Credential)
Get-PnPClientSideComponent -Page Image.aspx |Format -Autosize
textWebpart = Get-PnPClientSideComponent -Page Image.aspx -InstanceId 1d5bfd23-766c-4e24-aa34-8e08527a29d7
$textWebpart.Text | clip
$htmlToInject = '
<div class="canvasRteResponsiveTable">
<div class="tableWrapper">
<table title="Table">
	<tbody>
		<tr>
			<td>Name</td>
			<td>Dept</td>
			<td>City</td>
		</tr>
		<tr>
			<td>Laks</td>
			<td>TECH</td>
			<td><img src="https://mysites.sharepoint.com/sites/Test/SiteAssets/logo-ota.png" ></td>
		</tr>
		<tr>
			<td>Sethu</td>
			<td>TECH</td>
			<td><img src="https://mysites.sharepoint.com/sites/Test/SiteAssets/logo-ota.png" ></td>
		</tr>
	</tbody>
</table>
</div>
</div>
'
Set-PnPClientSideText -Page Image.aspx -InstanceId 1d5bfd23-766c-4e24-aa34-8e08527a29d7  -Text $htmlToInject

You just need to get the table content using get-PnpClientSide Text and manipulate the html contents by adding image tag and set the html content by Set-PnPClientSideText commands. Bravo! Done!

Happy SharePointing 🙂