There are so many available @TashaT !
My advice is to go for the biggest capacity you can comfortably afford, and one that's pockeatable.
The one I have also has a rubberised pad on the top of it so I can wirelessley charge as well as hook it up to the phone with a cord.
Look at reviews attached to them and there are some good reviews on YouTube too.
I wish you all the best. Take care. 😎
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help.