Having a book out when the bookshops are shut and publicity tours aren't an option (except via zoom) is tough. Lockdowns favour big names over smaller or newer authors. But here are some amazing things you can do to help authors ride this out...
1) Review their books on amazon: it's most people's book search engine, and even more when there are no bookshops to browse or booksellers to ask... for example ahem...
2) TELL THEM you enjoyed their book. They may be feeling glum. You will 100% make their day.
3) If their book isn't out yet, preorder it! For eg this from @ldlapinski is coming in April. Most booksellers will be ordering smaller quantities than usual, this gives them a reason to order more! Also you might get a lovely package from @rshipbshop
Oops forgot a bridgerton gif for the last one. Enjoy this one.