Practice one opening at a time and learn all kinds of end games and follow some basic steps to develop pieces. Also avoid moving the same pieces over and over again. Let each piece develop then attack. Watch chess videos from good players like MatoJelic (my personal favorite), Ben Finegold (Chess club of St Louis), Akobian (same place as Ben), and ChessNetwork/Kingscruscher if you want deeper analysis of games.
For beginner videos these are some of my favorite ones:
www.youtube.com/watch?v=rgACBk-4dAswww.youtube.com/watch?v=qCkdHnay3I0www.youtube.com/watch?v=6yvzdZT4-qcwww.youtube.com/watch?v=O-2bjIU6uvcMato uploads videos every day and all are worth a watch.
www.youtube.com/user/MatoJelic/videosAlso as important or more important than learning the openings is learning different endgames and checkmates.
Play all kinds of different endgames from position against the stockfish engine.
Some more tips
1. Dont get your queen out early
2. Find out what your opponent is trying to do
3. Dont fall into forks and pins
4. Learn openings from level of difficulty start with easy openings then get more complicated.
Some of the best openings to start with in my opinion include:
Kings pawn games
Ruy Lopez
Scotch/Italian game.
Sicilian
Caro-Kann
and Pirc/Modern however less common very solid for the most part.
French (I dislike playing it but I have to play it from white)
Queens pawn games
Queens gambit accepted and declined (leads to all kinds of other openings)
Slav
Semi Slav
Kings Indian Defense
London System
If someone plays QG against you it is probably best that you chose the declined line or make it a Kings Indian.
Getting better the English opening is good and if you want crazy - aggressive then the Benko gambit is decent in the Benoni (a more difficult opening not recommended for beginners).
And lastly practice practice practice.
I am sure I am missing some advice but this should get you started.