Why puzzle have no forward and backward button

For mobile users, In the middle of solving puzzle there is no option for going backward/forward. While in lichess puzzle section there it is.

So you are looking at a puzzle and trying to solve it.

And you guess the first move wrong a couple of times, then you get it and Chess.com lets you know you have the right move, so you can go on to second move.

But instead, you want to go back a move. Do you want chess.com to reset everything, so that you get no credit for solving the first move? And can make the same mistakes all over again?

It seems to me that you normally submit a move as your answer and then you expect Chess.com to evaluate it and keep track of your progress. And let you go forward.

But then instead of going forward, you want to be able to go backwards-- maybe one move, maybe two moves? How many moves should you be able to go back?

While in solving mode you can't go back. Only after the puzzle is solved or the solution is displayed can you start navigating. Like "you can't polish your car while you're driving". 1. Drive 2. Polish ... Wax on, Wax off, Wax on...

Now you can see the difference and can understand topic more easily. Don't you think there should be backward and forward button in puzzle section? It is already there in puzzle rush.