I’m so sorry for your loss. Last year we went to the Motorhome show at South Downs. While walking back to our van, I started chatting to a chap on his own with his dog. He too had lost his wife but decided to downsize to a campervan with a basic loo and no shower. The communal showers on site had been closed due to Covid, and he was saying he wished he still had the old van with shower. Give it a while before you make any decisions if financially you can. There’s still time to adapt but I wish you the very best and to anyone who is also solo travelling too.