Update Tmux to 3.3a. I just copy pasted and changed values.. Had to install autotools-dev, automake, libtool(brew)

tmux-setup.sh

sudo apt-get install autotools-dev
sudo apt-get install automake
brew install libtool
ln -s /usr/local/bin/glibtoolize /usr/local/bin/libtoolize

echo alias tmux=\"tmux -u\" >> ~/.bashrc # enable unicode for better looks
exec $SHELL

tmux.sh

#!/usr/bin/env bash

set -e

ROOT_DIR=${HOME}

# Clean up
rm -rf libevent-2.1.12-stable.tar.gz
rm -rf ncurses-6.2.tar.gz
rm -rf tmux-3.2-rc4.tar.gz

wget "https://github.com/tmux/tmux/releases/download/3.3a/tmux-3.3a.tar.gz"
wget "https://invisible-mirror.net/archives/ncurses/ncurses-6.2.tar.gz"
wget "https://github.com/libevent/libevent/releases/download/release-2.1.12-stable/libevent-2.1.12-stable.tar.gz"
cp -r "./libevent-2.1.12-stable.tar.gz" "./ncurses-6.2.tar.gz" "./tmux-3.3a.tar.gz" ${ROOT_DIR}

cd ${ROOT_DIR}

tar xvf "libevent-2.1.12-stable.tar.gz"
tar xvf "ncurses-6.2.tar.gz"
tar xvf "tmux-3.3a.tar.gz"

# Install libevent
cd libevent-2.1.12-stable
./autogen.sh
./configure --prefix=${ROOT_DIR}/.local
make
make install
cd ..

# Install ncurses
cd ncurses-6.2
./configure --prefix=${ROOT_DIR}/.local
make
make install
cd ..

# Install tmux
cd tmux-3.3a
./configure --prefix=${ROOT_DIR}/.local \
  CFLAGS="-I${ROOT_DIR}/.local/include -I${ROOT_DIR}/.local/include/ncurses" \
  LDFLAGS="-L${ROOT_DIR}/.local/include -L${ROOT_DIR}/.local/include/ncurses -L${ROOT_DIR}/.local/lib"
make
make install
cd ..

# Clean up
rm -rf libevent-2.1.12-stable*
rm -rf ncurses-6.2*
rm -rf tmux-3.3a*

echo "[SUCCESS] ${ROOT_DIR}/.local/bin/tmux is now available"

Then copy paste the config i got from somewhere: https://github.com/kakarot-dev/tmux into the .config/tmux dir and source it to tmux