Watch the CS50 youtube channel by Harvard. They are of high quality. It includes:
Web Security
JavaScript fundamentals
Python fundamentals(for backend)
Flask(for backend)
Django(a backend framework)
HTML5 basics
CSS3 basics
Along with above things you should include:
Discrete Mathematics
Algorithms And Data Structure(Choose any language)-- Solve at least 100 problems from easy to medium level questions on Leetcode/Hackerrank/Codewars.
Database Management System(A theory subject if you want to go with RDBMS)
Note: Learn a Frontend web framework if it is absolutely necessary for a Job Profile.