Need some opening books.

I reached 2100 rapid nearly 6 months ago, and ever since I was aiming for 2200.
I usually play the Hungarian open, and it helped me reach 2150+, but it took me 6 months to reach this rating.
Many of my friends an seniors advised me to change my opening, and I finally did that yesterday.
To my surprise, I have won 8 out of my last 10 rapid games (after changing my opening) and now I am a 2200.
I now usually play e4 as white, and either e5 or d5 as black.
However, since I have been playing the Hungarian for over a year now, I know almost every variation which can arise from the Hungarian, but I also know that it wont help me raise my rating.
Also, as I just changed my opening yesterday, I am not quite familiar with my new opening, as a result of which I find myself randomly moving my bishops and pawns here and there.
It will be really helpful if u guys will suggest some nice books on chess openings, which will help me improve my rating.
Regards.

@MohammadAayanKhan
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@MohammadAayanKhan I recommend The Caro-kann it helps my rating go very fast but im not sure if it is effective at 2200+ rating.

I dont know much about the hungarian opening, with g3 you are giving free play for black.

You probably like something more positional, with pressure on the center, i can be wrong. Here for white i would go to the catalan, english or queen gambit. You can play the c openings, but i am not sure if it fits you. Try it.

For black, you have a lot of answers: like kid, ck, french, qid, pirc, benoni, ...

What i would recommend is to try to fight for the center on the opening. Probably right now, you get an ok position from the opening and you are good in the middle game, so you at the end wins, but against high rated opponents, they do not give you the advantage from the opening back, and you struggle.

For books take the chess opening essentials, fco, or mastering chess openings.

That is it. My thought from a low rated player. ;)