SEO noob quest.

I want to start again doing seo. I want to ask if should I need to have higher domain score just to rank top 3 on a longtail keyword even they dont have social shares, you can check this link ubersuggest result https://ibb.co/wySXg96 . I wanted to subscribe on ahrefs but its kinda expensive to my end. Do you have any suggestions for alternative tools that is lesser than 20 usb per month? or is it possible to rank 20k+ keyword volume without using paid tools?

For keyword analysis, ahrefs, is a bad go-to. I would better recommend Semrush/Sistrix/KWFinder alternately (all at once or separately). Also, keywordtool.io is adequate, but as you may see they are all about that price. Free tools like ubersuggest is not as good as this options. Considering the bad quality of the group buys I've been purchasing in the last years, now I'm seriously thinking on starting a little group of people interested on using this tools to share the access and share the spendings. I have 4 or 5 other users that have asked me before but this is pretty complex. Now I'm rerrolling VCC every week or month, but it's a waste of time and not all services (like KWfinder or Keywordtool) offer this trial deal

Send me a PM and I will see if we can arrange something, but not 100% sure if it will be done.

There are a lot of factors other than domain ratings to rank a keyword. The backlinks, content, context, etc matter. Sometimes you can beat competitors with good on-page if they are not particularly targeting that keyword.
You can rank a 20k+ volume without any paid tool but you should have the relevant knowledge and get your insights manually from the correct sources. I doubt it would be easy to pull that off if you are not well versed in SEO. It would save you a lot of time, effort and misguided money if you buy specific tools that can aggregate data and help you narrow down what you have to do- or hire someone to do it for you.
I got some tools like moz, ahrefs etc from a groupbuy which uses RDP- a little clumsy and laggy but they seem to be doing the job.

I think that semrush but if you aren't in the adult niche you can also use the keyword suggestion tool of Google adwords.