problems in a step

[BawlerPepsi]

This is probably due to my inexperience with Terminal but i have such issues. please help. i have reinstalled python twice and python says it's installed every time.

% mkdir -p ~/opt
python -m venv ~/opt/lgtv
cd ~/opt/lgtv
source bin/activate
pip install git+https://github.com/klattimer/LGWebOSRemote
zsh: command not found: python
cd: no such file or directory: /Users/shimseungdo/opt/lgtv
source: no such file or directory: bin/activate
zsh: command not found: pip
shimseungdo@simseungdoui-MacBookPro ~ %

[BawlerPepsi]

please delete my name.