The plants sold as Lucky Bamboo is actually Dracaena sanderiana. As a houseplant, most Lucky Bamboo is grown in water only, no soil. Make sure the water covers the roots. It's best to use filtered or bottled water. Keep the plant indoors in bright light; strong sunlight is not advised and the plant will not do well in low light.
Since yours is in soil and is leaning, I might suggest that you wash away the soil, place the stalks (tied together) into a suitable container and place pebbles around it to support the plant inside the pot. Add water to just cover the roots. Keep the water fresh; change as needed.
If you type Lucky Bamboo in glass vase into a Google Image search you will see several examples of how your plant would look in a glass vase.
Lucky Bamboo is tied together. Most people leave the ties in place. The number of stalks has different meanings with 3 stalks being the most popular as it represents happiness, wealth and long life. Using only 4 stalks should be avoided as it represents bad luck and death.