Olive tree question

Hello,

We have two olive trees outside our front door but one of them seems to be a bit worse for wear, any ideas why this could be please?






Good tree pot







Bad tree pot

 

Im guessing waterlogged ? . Moss on the soil of an olive aint right.

 

Too much water, too little space. Give it a bigger pot and better drainage and it will grow back

 

I was thinking they'd be better in bigger pots, too.

 

Olive trees like a lot of drainage and big pots. They don't need a lot of water.

 

To be brutally honest even the good one looks like its not happy.
Is it a sunny aspect?
As said earlier a repot would help.