Can you wish for old character banners in Genshin Impact for example like Hu Tao?
No, you can’t once the banner passes. Only when the “featured character banner” is active. Now, while it may have passed already, it’s very likely there will be a re-run of the character banner to try and obtain the characters you want. There have been several already and Hu Tao is probably still upcoming.
There are a few characters which are available on the “standard banner,” namely: Jean, Diluc, Qiqi, Mona, and Keqing.
Just make sure to save/have enough Primogems when the time comes!
I hope this helps!