You want this;
https://www.walgreens.com/store/c/ne...366526-product
If you have a really bad issue, you want to get their pressure washer variant;
https://shop.neilmed.com/products/ne...hydropulse-neo
Few things;
You used distilled water and you add their little salt packets which turns it into saline. Makes it not burn and you won't believe the gunk you get out of your nose.
Next, make sure you tilt your head correctly so it comes out the right side and not go down your throat.
Lastly, go see an ENT and do your due diligence on who's shitty and who's not.
First step is to go to walgreens and get that little bottle thing and some distilled water and try it out.