Coming back to chess after a long break, what openings should I use

Basically, I used to play chess like everyday on Rapid 15|10 and somewhere in between I kinda lost interest in the game and stopped playing for a while.

I used to be always play The Italian opening with white and I went for the fried liver, but that stuff's old now and I need to learn actual openings now. With black I usually play e5 or the French Defense in response to 1.e4, Grand Prix for Sicillian and some exchange variation for Caro-Kahn. I don't really have a good inventory of openings really

I need refine my middlegames and endgames as well but I'd rather start with the opening because I lose most of the advantage right off the bat in most of my games.

best opening ever

Your current repoirtore is pretty good already. Just brush up on some lines/learn some new ones.

I would suggest Italian, Ruy Lopez, Sicilian or/and Queen’s Gambit

the Bulgarian toe tickler is always a good opening

I have been successfully using e4 for 20+ years

Play what suits your personality and style.

You lost your last game because of two middle game blunders. You allowed a fork of the your rook and queen, and then, when you moved your queen away from the fork you moved it to a defended square.

I think your openings are fine.

If you liked those openings, chances are that you’ll like them again when you take them up again, so there is no pressing need to change your repertoire. What is more important than the number and length of opening lines you play is whether you understand the ideas behind the moves.

Different authors suggest different approaches to building an opening repertoire. For example, William Stewart’s book Chess Psychology: The Will to Win proposes the Stonewall Attack for white, and the French Defence (against e4) and the Slav Defence (against d4) for black. The rationale behind this selection is the similarity in the opening's’ underlying principles: pawns control one colour of squares in the centre, whereas minor pieces control squares of the other colour.

A Simple Chess Opening Repertoire for White by Sam Collins takes a different approach: “White opens with 1 e4 and develops his pieces to natural squares, seeking open lines and the initiative. The dominant theme of this sound and active repertoire is that – where reasonable – White seeks out Isolated Queen Pawn (IQP) positions: i.e. with the c3 Sicilian, Panov Caro-Kann, Tarrasch French, and the Italian Game with early c3 and d4.” (Quoted from the publisher’s blurb.)

So if you are interested in ideas that you can transfer between different openings, you could look at what you’re currently playing and see whether your opening repertoire fits together in this way.