Your rose needs a few things: A repot into a bigger pot, and rich, loamy soil. Bonemeal to restore phosphorus (that’s likely why it’s no longer flowering) Slow release rose fertilizer (can be found at gardening stores)
As for trimming, prune off unproductive or bare branches, and cut off dying flowers. I don’t judiciously prune my roses.
Hopefully it can survive! Plants can be surprisingly resilient.
You can grow microgreens, and other green, leafy vegetables with the right conditions: full-spectrum light, deep enough soil, and keeping the soil moist. Lettuce and cabbage are very easy to grow.
In the spring after last frost, just sprinkle some of the fertalized pellets at the base of the plant and gently press them into the dirt. Follow the dosage instructions on the container.
Same goes for bonemeal - just gently press it on top of the soil. You could even cover it with a nutrient rich compost.
When was the last time you fertalized? Roses need to be fertalized 2-3 times a year (get a slow release formula specifically for roses). Your roses might also benefit from bonemeal to restore potassium to the soil. Lastly, is the yellowing because of rot/fungus? Cooler, humid climates cause numerous infections on roses, but are easily managed with garden sulphur.
Not sure if this will save this year’s rose hip harvest, but it will help for next years.
That’s just how cyclamen grow- they’re floppy plants. They like indirect light, so the lighting set up seems fine.