Tool To Play Your Games Against You and Create Puzzles (to detect problems in openings)?

Hey everyone. I have always noticed that I seem to play to the level of my opponent. One of the problems is that against players who play a proper counter, their responses are often more telling. I'm able to realize my mistakes more quickly and consolidate my position, and play high-level chess. Whereas with weaker players, if my mistakes go unpunished, I might keep making more mistakes until my position collapses like a house of cards and we're both leaving all our pieces hanging.

I'd really like to improve upon my opening skills to prevent myself from making poor choices in the opening and prevent my position from being exploitable by these weaker players later in the game. I believe that in my case, that's the key to rapid improvement. I recognize some of the ideas to push for in these openings already (such as going after f7), but I deploy them in a mistaken order. For instance in Italian I might push c3 instead of castling, and when I castle next move it's a mistake, since i should have done d4, etc.

What I'd really like to do is play exclusively against much stronger players but that's not always possible.

So my idea here is to have a chess engine that you play against that plays the openings you already play. It either has your PGNs, or at least a sketch of all the opening moves that you have played in your past chess.com games

When you play against this tool, it is as if you're playing a real game with  a few differences:

- the tool only plays moves that your opponents have played.

- This tool will stop playing once you have gained a powerful advantage, indicating that you have exploited an inaccuracy by your opponent and you "mastered" the position.

- as soon as you make a substandard move (let's say you lose 100 centipawns), the tool will alert you that you are in the wrong. And then it'll add that position to some stack of positions for you to review later. These will basically be your chess opening flashcards which will turn you into a great player. It'll turn your weak points into strengths.

So there's my idea! It's basically a substitute for the way that I imagine a real player would train another player on their openings.

As I describe this tool, I have to consider that something like this could already exist.

Does anyone know of an online tool that would play your PGNs against you? How about one that can detect your inaccuracies and make puzzles out of these?

Would anyone be interested in using such an online tool, if it does not already exist and it were to be developed?

Thanks everyone! Apologies for the long length haha. I could totally see chess.com adapting something like this themself and I'd be all for it.

Bonus: here's a little info on my opening style:

I play standard openings. Usually as White I'm playing forcefully whereas as Black I'm trying to neutralize their attack by trading off pieces and looking for opportunities to punish mistakes.

White: Italian to Evan's Gambit, Fried Liver, or c3 -> d4 / Qb3. I win a lot of games with Fried Liver but I also make some bad blunders.

Black: if e4, Sicilian to d6 -> e5. if e5, d5 then if Queen's Gambit, e6.

Sounds interesting. Aimchess website has some similar training strategies.