I have had problems with this, and it has resulted in hearing loss. I often clean my ears and scrape out wax, bad idea really, and far worse was rolling up tissue and feeding the point into my ear, then rolling the other way, and pulling it out with the wax. I made myself profoundly deaf for several days afterward.
I haven’t done this since. Not that this makes my stupidity any less impressive.
I think dissolving a problematic wax build up is the latest way. There are oils you can buy.