I saw this ad this morning:
Is there really no way to avoid the awkwardness?
This page describes a solution but the settings menu they are suggesting does not exist anymore.
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Could not find the way you explain in the other answer, but through help I have found a link to do it https://help.linkedin.com/app/answers/detail/a_id/49410/kw/How+to+view+a+LinkedIn+profile+anonymously