It is looking for more light and is etiolating. Slowly introduce your succulent to more light. It may be worth while doing a little research online about that specific plant you have to figure out how much light they need per day on average and slowly introduce that amount.
This usually means the plant is thirsty and is using its stored water. Use a moisture meter and adjust your watering habit, but don't go overboard, succulents don't like wet feet or sitting in water for long.
Usually, if your leaves are looking bloated and falling off at the slightest touch, this is overwatering. Start to use a moisture meter and water only when the soil is completely dry.
Haworthia plants need plenty of light but prefer bright, indirect light rather than harsh, direct sun, which can burn their leaves. Ideally, provide 6-8 hours of bright, filtered light daily.
Yes, most Agave plants absolutely love sun. They thrive in full, direct sun, typically requiring at least six hours of sunlight daily to maintain their structure, color, and health.