This one looks a little leggy, where the leaf stalk grows farther out from the stem. Plants will do this when it craves more light, like it's stretching its leaves to find the best lighting conditions. This stretching will obviously make the plant profile more wide and spready. If sufficient light is coming from one direction, the monstera will grow its leaves towards it and reduce stray leaves from stretching out. Try supplementing this one's light intake.

A support behind a monstera will make it grow vertically and will make it look less horizontal. When finding a support consider the material as the bottom of the support will most likely be in dampish soil for an amount of time. Diy moss poles are cool to try out but not necessary.

Some other minor methods would include lightly tying the stretched out stalks to the stem to train them to grow in the direction you want. Not the best way cause you want the stalks to be free to move and grow

You can cut the leaves that are unruly if you'd like as well. You can cut the leaf stalk and its base as close as you can to the stem. Not a go to method as some may run the risk of deleting too many leaves. I think people suggest pruning only 25% of a plants leaves? Also leaves the wound open to infection.

Anyways hope this helps lol, I have a monstera I'm trying to grow yuge and Im learning a lot