The bulb gets many leaves but no blooms.
It can be difficult to get an Amaryllis to rebloom. They need fertilizer during the summer and a dormant period. The link below should help:
https://www.gardeningknowhow.com/ornamental/bulbs/amaryllis-hippeastrum/amaryllis-bloom-again.htm
My amaryllis bulbs are approx. 5 years old. Will they still send up a stalk and bloom?
It is right there at the age that it can start flowering! To encourage your amaryllis bulbs to bloom, provide proper care, fertilize regularly, prune dead leaves and flowers, re-pot if necessary, and let the bulb rest after blooming. Amaryllis thrive in well-draining soil and need consistent watering, but be careful not to overwater, as this can lead to root rot. Use a balanced, water-soluble fertilizer every 2-4 weeks during the growing season to replenish nutrients. Remove any dead or dying leaves and flowers to promote new growth. If your amaryllis bulb has outgrown its current container, consider re-potting it in a larger pot with fresh soil to give it more room to grow and access to nutrients. After the blooming period, allow the plant to rest for 8-12 weeks by reducing watering and moving it to a cooler location. Following these steps can increase the likelihood of your older amaryllis bulbs producing stalks and blooming.
https://www.gardeningknowhow.com/ornamental/bulbs/amaryllis-hippeastrum/no-flowers-on-amaryllis.htm
Do I water and fertilize my plant during that 8-10week dormant period?
No, while dormant, the bulb is left in darkness in a cool area, with no water or food. After Christmas, keep it indoors and water and fertilize till you can move it outdoors (or keep it inside if plenty of light) after the danger of frost has passed. Outdoors keep it in a sunny area, water and fertilize till you are ready to initiate dormancy. Back off on water till you bring it inside to its dormant place, then no water or food. Wait about 10 weeks, then bring it back inside to warmth and light, and start watering again. Soon it should send up flower stalks. (Sometimes the leaves will come up first, then the stalks.)
My amaryllis is so beautiful, I don't want to lose it. Thank you,
You can cut back the stem at the base but do not cut the leaves. They gather energy for the bulb. Here is more: