https://www.amazon.com/dp/B083J1T7CC yes this one is pretty awesome! You could also get them from aliexpress but I don't think that is a good idea at the moment. (got mine there for 20 € before this shit started)
https://smile.amazon.com/dp/B083J1T7CC
I use this one when I'm not at home.
I use this Baseus one and it can super fast charg on a S21. I don't know if it'll do 45w since the S21 doesn't support it.