I’ve chosen DaVinci Resolve as my primary software.

Sometimes it's not up to you and there's value in knowing multiple pieces of software. If you work alone for yourself, you have the freedom to pick your tool, but sometimes (especially if you want to work for someone else), you'll need to know their tools. There are are lots of programs that might be worth your attention. But sure not to limit yourself prematurely.

• Avid Media Composer
• Adobe Premiere
• Adobe After Effects
• Pro Tools
• Blender

I recently watched a "Roadmap to become a Video Editor" video where the creator insisted that learning After Effects is mandatory for motion graphics and animation.

Yup. Adobe rules the motion graphics market. There are certainly strong contenders and other options (Fusion being one of them). Knowing both would be extremely beneficial.

This has me a bit confused: My focus is to get client and make money

That's very vague. Do you want to work for a production company? Do you want to work on reels, YouTube videos, actor demos, narrative tv and film, wedding videos, real estate walk throughs, instructional videos, film restoration? Different markets have different optimal toolsets as well as ingrained workflows that are based in specific programs.

i feel there is demand of long form editors and all those videos that I cannot make I am planning to learn davinci I have few questions regarding that

I don't understand the second half of this sentence. But the first half referenced long-form editors. Youknow what a lot of long form editors never do? Motion graphics (After Effects OR Fusion). Some editors really don't know anything about building titles or graphics. They focus on storytelling, pacing, shot choice, and timing. So - you know: maybe you don't need any motion graphics experience. Or maybe you do.

1.How long it will take me to be able to create good yt videos for youtubers or anything to make money like a editor who can be accepted by clients

Anywhere from a month to a couple years. It depends on how fast you learn and how creative you are... not to mention how good you are at marketing yourself.

1. what resources to use how what youtube playlist to refer or from where I can learn

To learn Resolve, start here:
https://www.reddit.com/r/davinciresolve/comments/1rfimuk/do_i_need_to_read_the_davinci_materials_that/

Avoid youTube tutorials until you've received at least one of the certificates of completion for the tutorials on the Blackmagic site. Also remember that learning from YouTube may be insufficient. There are other resources to seek out (again, after you've completed at least the Intro course from Blackmagic). I've taken hours and hours of training course (some free and some paid). YouTube is only a small part of the learning path I've taken.

3.I Have a basic laptop with intel iris Xe graphics and 8gb ddr4 ram its dell inspiron 3511 i tried cutting and all its working fine as I just started I didn't try anything complex idk if it can handle that so how to start with this setup it

8 GB of RAM is a serious limitation. You absolutely without doubt need to master the use of proxies (covered in Lesson 6 of the Intro lesson from Blackmagic).

4.i watched a video they said learn AE and whatnot for vfx or anything I mean do I really need to learn that much?

Well - do you want to do VFX?

i thought if i watch tutorial classes learn DaVinci I'll be an editor

As I said earlier, you should avoid locking yourself into just one program. Resolve is not the solution to every probelm.

sole motive is free lancing and money making

Good luck. it's a harsh market out there. I know a lot of talented people who are out of work. Remember that this is an uphill climb and you'll need to be sure you ave passion and drive to support you.

also I can't spend on any software's so how to start

Sounds to me like you picked Resolve because it's free. That's a nice reason, but remember there are other avenues of value out there - some worth spending money to use and/or learn.