One thing you’ll find here, YouTube and everywhere else is that you’ll get different advice from everyone regarding Plantar Fasciitis. Every individual, every practitioner…they all have different ideas on what to do. As someone who has had it with both feet (twice now on right foot), I’ll tell you what has worked for me.
The first time on both feet, it took about 1.5 years to resolve. I tried everything and the only thing that initially gave any relief was soft footwear plus a custom orthotic. This did not cure it but reduced the discomfort a bit. The pain level was still high, though, and it really impacted my life.
I finally went to a physiotherapist that did shockwave therapy and the next morning the pain was 90% gone. After a few sessions I was good to go. Shockwave seems to be quite successful for PF. Your results may vary if you try it.