Find element where doesn't contains a specific class - selenium

Question

I have two objects on the page with same html. Only one of the element's parent tag doesn't have same class name. When I try using not(contains()) it still shows both elements
below is the xpath I tried and still it is detecting both buttons and always clicking on the second button.
//div[contains(#class,"jss") and
not(contains(#class,"canvas-image-export"))]//button[contains(.,'Connected')]
below is the code for first button named Connected where I am interested to get
<div class="jss203">
<div class="MuiTabs-root jss244">
<div class="MuiTabs-scroller MuiTabs-fixed" style="overflow: hidden;">
<div class="MuiTabs-flexContainer" role="tablist">
<button class="MuiButtonBase-root MuiTab-root MuiTab-textColorPrimary Mui-selected" tabindex="0" type="button" role="tab" aria-selected="true"><span class="MuiTab-wrapper">Overview</span><span class="MuiTouchRipple-root"></span></button>
<button class="MuiButtonBase-root MuiTab-root MuiTab-textColorPrimary" tabindex="-1" type="button" role="tab" aria-selected="false"><span class="MuiTab-wrapper">Data Sources</span><span class="MuiTouchRipple-root"></span></button>
<button class="MuiButtonBase-root MuiTab-root MuiTab-textColorPrimary" tabindex="-1" type="button" role="tab" aria-selected="false"><span class="MuiTab-wrapper">Connected</span><span class="MuiTouchRipple-root"></span></button>
</div>
</div>
</div>
</div>
below is the code for second button named Connected which I should not click on
<div class="jss197 canvas-image-export">
<span class="" data-testid="componentContainer">
<div class="MuiTabs-root jss244">
<div class="MuiTabs-scroller MuiTabs-fixed" style="overflow: hidden;">
<div class="MuiTabs-flexContainer" role="tablist">
<button class="MuiButtonBase-root MuiTab-root MuiTab-textColorPrimary Mui-selected" tabindex="0" type="button" role="tab" aria-selected="true"><span class="MuiTab-wrapper">Overview</span><span class="MuiTouchRipple-root"></span></button>
<button class="MuiButtonBase-root MuiTab-root MuiTab-textColorPrimary" tabindex="-1" type="button" role="tab" aria-selected="false"><span class="MuiTab-wrapper">Data Sources</span><span class="MuiTouchRipple-root"></span></button>
<button class="MuiButtonBase-root MuiTab-root MuiTab-textColorPrimary" tabindex="-1" type="button" role="tab" aria-selected="false"><span class="MuiTab-wrapper">Connected</span><span class="MuiTouchRipple-root"></span></button>
</div>
</div>
</div>
</span>
</div>
TIA

Answer 1

Your problem here is that you are looking on the upper parent node <div class="jss197 canvas-image-export"> vs <div class="jss203"> while there is another element there <div class="MuiTabs-root jss244"> or <div class="MuiTabs-root jss244"> and it is also matching your XPath //div[contains(#class,"jss") and not(contains(#class,"canvas-image-export"))]//button[contains(.,'Connected')].
So, to make your XPath work you need to add one more detail: not contains MuiTabs-root class, as following:
//div[contains(#class,"jss") and not(contains(#class,"canvas-image-export")) and not(contains(#class,"MuiTabs-root"))]//button[contains(.,'Connected')]

Answer 2

To get only first div buttons, you can exclude the span tag for the second element. Using following xpath you can get that.
//div[starts-with(#class,'jss')][not(span[#data-testid='componentContainer'])]//button[contains(.,'Connected')]
Or
//div[starts-with(#class,'jss')][not(span)]//button[contains(.,'Connected')]