My friend I too face issues with Lui Fei and Freya quests.
On a private server I started the quests of both heroes by completing Lui Fei first and after starting Freya, her quest got bugged on me on step two when I made the mistake to enter in my base. I thought that step got reset and went to talk to Freya again but when I spoke to her I was getting no notification that she follows me.
On official server 3047, I completed Freya ‘s quest with zero sweat (aka issues) , but when I went to start Lui Fei ‘s quest the bug struck. I couldn’t and still can’t progress his dialog to start the step 1 of his quest and it’s been two years since the day my issue started.
The strange thing is that on my steam deck I managed to get both heroes quests with zero issues and also I did them with out be in/have a clan in my single player playthrough.
Here’s what I currently face with Lui Fei ‘s quest: