Learn And Learn
Some tips for beginners

The opening part is wrong. Just opening principles work.

The biggest reason people struggle in lower-level chess is because of blunders. They make them in almost every game.
A mistake can instantly put you in a bad position, no matter how well you played earlier: if you had great opening knowledge, great positional skills, great endgame skills, whatever; a single mistake can change everything (you lose a piece or get checkmated).
So, how do you avoid blunders? Follow this simple algorithm:
While avoiding blunders is crucial, I also share a few basic principles with my students. These principles help them figure out what to do in each part of the game - the opening, the middlegame, and the endgame. Understanding these simple principles is like having a map for your moves. I provide my students with more advanced algorithms that incorporate these fundamental principles. When you use this knowledge along with being careful about blunders, you're not just getting better at defending. You're also learning a well-rounded approach to chess. Keep in mind, chess is not just about not making mistakes; it's about making smart and planned moves to outsmart your opponent.

Learn basic endgames and tactical combinations. Develop all your pieces where they have support. You look for more defenders then attackers. Be aware of what squares change control when moves are played. Counting piece and pawn movements as well as controling influence of a square saves on basic calculation. But watch out for in between moves that remove defenders, or give checks.
As a beginner learn some opening principles . Like put your pawns in the center and check for your opponents move to see what it attacks and don't lead your pieces undefended Hope this helps a little