Tmux prefix doesn't work unless ~/.tmux.conf is forced

I'm currently including tmux into my work flow but I've not been able to use its prefix like it is set up natively C-b on start. My work around to this problem is to set another key bind on the following ~/.tmux.conf and force loading it with tmux -f ~/.tmux.conf.

unbind C-bset -g prefix C-t

.bashrc

## ~/.bashrc## If not running interactively, don't do anything[[ $- != *i* ]] && returnalias ls='ls --color=auto'alias grep='grep --color=auto'PS1='[\u@\h \W]\$ 'eval "$(oh-my-posh init bash --config ~/.poshthemes/pure.omp.json)"set -o vi

I've already checked bash vi mode isn't conflicting tmux

My work environment is:

• Wsl 2 - Arch linux
• Alacritty terminal run from windows

I'm a new user so please let me know if you need me to provide further details with a command or settings.