What keyword research tool or method is best? [FRUSTRATED]

As my personal advice I prefer use to some tools as Ahrefs, Ubersuggest, Google keyword planner & SemRush.
First of all download keywordEverywhere to your browser and search you relevant keywords on Google. It will show you results with some monthly search volume. Use those keywords on above tools and do research of niche relevant keyword. (Make sure you know well how to do keyword research if you want to target any keyword & you know well if yo want to target your site content organically rank in Google search terms)

SEMrush is my all time favorite keyword research tool as this tool provides both short and long-tail keyword research, along with information on keywords for both PPC and organic traffic. That's the only reason I prefer to use this tools always.