Any recommendations? Looks like I need to add more soil (picture is few months old).
Existing soil includes tree barks, not sure if matters. Also growing yellow mushroom over the past 2 months 🤣

Why do you think you need to add more soil?
Might be keeping it too moist if it's growing mushrooms.

Why do you think is that? Pretty sure I don't overwater as I only water when it's dry (used to be 3-4 weeks, now in the summer more frequently).

I'm adding a more recent picture. It recently started leaning, the soil wasn't compact enough. I pressed it down and added support as you can see... 🤷‍♀️