Japon 32 days 2024

This is our itinerary. We are thinking of buying the JR Pass for 21 days but after reading some other questions I am not sure what would be best for the whole trip. I would appreciate any help you can give me.

19/09 Narita
20/09 Tokyo
21/09 Tokyo
22/09 Tokyo Kamakura
23/09 Tokyo
24/09 Tokyo s
25/09 Tokyo Nikko
26/09 Tokyo
27/09 Matsumoto
28/09 Kanazawa
29/09 Kyoto
30/09 Kyoto
01/10 Kyoto
02/10 Kyoto
03/10 Fushimi Inara Nara-
04/10 Kyoto
05/10 Kyoto
06/10 Hiroshima
07/10 Miyajima
08/10 Osaka
09/10 Osaka
10/10 Osaka
11/10 Osaka
12/10 Osaka
13/10 Osaka
14/10 Osaka
15/10 Naoshima
16/10 Naoshima
17/10 Tokyo
18/10 Tokyo
19/10 Tokyo Fuji
20/10 Tokyo
21/10 Narita