How to change the default keybinds using the developer console
Then type key_listboundkeys
This will print a list of all the current bound keys as well as the name of the input.
For example, the input for switching between First and Thirdperson is called “+iv_view”
so if you want to change that just type: bind b +iv_view (Change b to whatever key you want of course)
If something goes wrong during this process you can always revert to the default key bindings by typing: binddefaults
If you want to disable it type r_post_bloom 0
(The map is Wuhu Island by Epic Gamers)