I’ve have some sinus issues but haven’t had a bad flare up for a long time. I use nasal irrigation every day, morning and evening, and more if I feel a bit stuffed up and if I’ve been out among groups of people for a longer period of time.

The nasal irrigation of saline solution was a game changer. I also buy the prepared options. A natural source sea water rich in minerals, isotonic, sterile and hypoallergenic. It contains diluted seawater at 1.102% w/v sodium chloride. No preservatives. It is more expensive but if you want to clear out your nasal passages fast, consider the Full stream option. It works. There are different product names available for this type of hydrating nasal spray.
Hope it helps.