tmux vs screen

I was a big fan of screen but against RHEL8 I have to move on tmux. Is is ok, by my finger memory have been adjusting to screen configuration, so there is a .tmux.conf with screen binding.

unbind C-b
### change default prefix to screen prefix C-a
set -g prefix C-a
set -g status-bg black
set -g status-fg white
set-window-option -g window-status-current-bg white
set-window-option -g window-status-current-fg black
set-window-option -g window-status-current-attr bold
set -g status-left '#[fg=colour80](#S) #(whoami) '
set -g status-justify centre
bind-key C-a last-window
bind-key C-c new-window
bind-key space next-window
bind-key bspace previous-window
bind a send-prefix
### set mouse on with prefix+m and off with prefix+M 
bind m \
    set -g mouse on \;\
    display 'Mouse: ON'
bind M \
    set -g mouse off \;\
    display 'Mouse: OFF'