Iui with 8 million sperm sample

Just had my <a href="https://glowing.com/glow-fertility-program">iui</a> and feeling very discouraged my husband sample was only 8 million. That seems so low. Just want to know others numbers on what was successful and what wasn't. This is my fourth <a href="https://glowing.com/glow-fertility-program">iui</a> and the lowest sample we have ever had.