The trailing plant in the clay pot... is that a Pothos? Epipremnum?
It needs a lot more water than it is getting. I am growing these in aquariums. Roots in the tank, stems and leaves out of the water. Really good water movement, plenty of oxygen in the water.
I would take cuttings of that one, throw away the bare stem parts and keep perhaps 6" worth of stem with leaves. Root them in a glass of water. Change the water daily so it stays well oxygenated. When the roots start forming pot it up into a good house plant soil mix. Keep it somewhere between moist and somewhat dry. Not very dry.
The picture that posted sideways, the plant tied to a trellis. Looks like the tips of the leaves are showing some burn. This can be from over watering (keeping the plant so wet no oxygen can enter the soil) or from too dry, or from salt burn. Read lower down about this.
The mixed dish of succulents looks pretty good. If all the other plants are just getting that much water, too, then they are starving for water.
See the white stuff on the clay pot? That is a salt or mineral build up. It is common when you are barely giving them any water, and what water you are giving them evaporates. It leaves behind the minerals and salts. This makes the soil salty, and the roots cannot cope with it. Most house plants come from jungles where it rains a LOT, but the soil is so loose that the water passes right through allowing the air right back in. The rain flushes out any minerals or salts quite often.
Here is what I would do:
Get a bucket or deep bowl. Deeper than any of the pots.
Put a few drops of surfactant (water wet or similar product) or a few drops of dish washing liquid (for doing dishes by hand) per gallon of water. Then plunge the whole pot into the container of water. Hold it under until it quits bubbling.
Then let it drain.
This way you are sure that the whole root zone is thoroughly soaked with water.
Then go a few waterings just by watering the top of the soil and letting it run out the bottom. Need a deep saucer so it won't overflow. Throw away the water that comes out the bottom.
Then repeat the dunk type of watering, perhaps once a month.
What you are doing is to flush out the excess minerals and salts in the soil.
