:tup
The best opening for beginners

Centre pawn openings usually allow development of the pieces. That is what beginers need in the end. So any of 1.e4, 1.d4 as white or 1.d5 1.e5 as black are usually sufficient. If white plays 1.c4 or 1.f4 then the beginer can take the oportunity to begin with the centre pawn two files away and get their pieces out, same if it is a knight move like 1.Nf3 d5 or 1.Nc3 e5. It is a great way to learn the game and doesnt do to much harm. I would say develop both bishops and knights support the centre pawn or occupy the centre and move the queen to the second rank then decide on castling. So long as there is not a threat to defend at least development is complete and there is a reasonable position with opening principles. Not necessarily an opening. But if it had to be a particular opening set you could also do London or Vienna opening as white. Caro Kann or Slav as black. Against C4 reversed Sicilian where they can use the Austrian attack (same as white) against F4 just go with the London. This leaves French and Scandinavian as awkward ones not covered. But I would say that for later. As least you get a chance for full development in most lines. Caro might be a bit harder.

i am a beginner myself but i like playing the Ruy Lopez. You get some control of the center and good development. You should try it.

Once a player has mastered opening principles then they can start to slowly learn theory on particular openings they seem to enjoy the resulting middle game positions from and use their opening principle mastery to guide them whenever opponents deviate from known theory.

Hi!
Here below a link to my post with recommended openings for beginners: https://www.chess.com/blog/maafernan/openings-for-beginners
Good luck!

i am a beginner myself but i like playing the Ruy Lopez. You get some control of the center and good development. You should try it.
Well I kinda like the center game but yeah, I should try it
1. 1.e4. This opening leads to more good openings such as the Italian Game ( I play that all the time )😞 before the Réti opening