add below code in <body> tag in module-newsletter/view/frontend/layout/default.xml
<referenceContainer name="sidebar.additional">
<block class="Magento\Newsletter\Block\Subscribe" name="form.subscribe" as="subscribe" after="wishlist_sidebar" template="subscribe.phtml"/>
</referenceContainer>
Note :- You can use sidebar.main instead of sidebar.additional for show in top of sidebar.
<referenceContainer name="sidebar.additional">
<block class="Magento\Newsletter\Block\Subscribe" name="form.subscribe" as="subscribe" after="wishlist_sidebar" template="subscribe.phtml"/>
</referenceContainer>
Note :- You can use sidebar.main instead of sidebar.additional for show in top of sidebar.
