Question for beginner

Hello ! I'm sorry I read the sidebar but I don't know if this belong here or not.

I wonder if it's better to learn one opening and its variants and try to master it instead of doing multiple openings to improve myself.

Because to be honest, I don't play anymore but I love that game and my problem was that I didn't improve.

Thanks a lot for answers !

Your time shouldn’t be focused on opening theory it should be focused on areas of keeping your pieces safe and capitalizing on your opponents unsafe pieces primarily which includes learning tactical motifs and training to spot them (solving puzzles) and learning a systematic way of assessing every position (CCT is my recommendation initially). Your opening should be developing in the center rapidly and castling before making any major trades in the center that may open your king to attacks. Once you’re over 1200 I’d consider looking into some opening theory if you really feel it’s binding your play, but I’ll tell you I’m around 2k in most time controls on Lichess and I don’t study any opening theory whatsoever. Most games at our amateur level aren’t decided by openings, it’s all about keeping pieces safe. 

-Jordan

Broadly yes it is a good idea to have one preferred opening that you play as much as possible and try to get as good as possible with.

However in practice your opponents will make you play a variety of openings. Just do your best in all positions and then after the game is over take a look at what mistakes your made and what the best moves are in those positions. This will help you improve in all stages of the game.

Look for all possible checks, captures, and threats (in that order) in the position for yourself and your opponent, and evaluate whether or not any of them are good moves before you make a particular move