For a blogger, there are many themes which are free and some premium theme cost less than $10. My suggestion is to go with the free template. At one point you gonna shift to WordPress.
You can try ATB template by Imran Uddin which is a top one in blogger templates. You can also try eleven 40 style ATB theme, both of these themes are available for free in alltechbuzz.net.
Try your hands with http://www.soratemplates.com/. This theme is premium $10. just check this out.
Also, check out blogger themes by blogging tip tricks, all those themes are free.
https://gooyaabitemplates.com/-- > This website also provides you with free blogger templates. Make sure you keep the footer credits otherwise it will redirect your blog to owner's one.
There is code in the XML file, remove that and you will be free from redirection. But keeping footer credits is the best one.
After uploading .xml file and make sure to change all the links with your blog links. Go to edit template and complete your work.