Nowdays, unless you enjoy putting together PC's or want to do some cool customization, it's almost always more time efficient to buy a prebuilt from a good reputable company.
I think a year ago when I ran the prices, I was only saving around $200-$300 bucks building it myself compared to buying a prebuilt. I'm terrible at cable management, so I opted to pay for the convenience and nicely sorted cables.
You can get a 3070 with 32gb DDR5 ram(which is overkill unless you love running 100 Chrome tabs like me), a i9 10900KF processor for around 2k nowadays. https://www.amazon.com/Gaming-3070-Core-12900KF-5-2Ghz/dp/B0B5HKXYQT/ref=sr_1_20?crid=2KW3ZWEFVGB9E&keywords=cpu+solutions+gaming+pc&qid=1672349391&sprefix=cpu+solutions+gaming+pc%2Caps%2C82&sr=8-20&ufe=app_do%3Aamzn1.fos.ac578592-0362-4e0a-958c-0f2dd61d30d4#customerReviews
I've bought 2 PC's from the CPU solutions and have had a solid experience. My wife is still using the older one I had that had a 1060 in it. I had one problem with them due to the motherboard shorting out in the first year, but they replaced that for me at no charge since it was still under warranty. You get a 1 year warranty and can buy a + 2 year warranty plan if you just want to make sure.
Their website is here: https://www.cpusolutions.com/store/pc/showsearchresults.asp?incSale=0&IDSale=0&ProdSort=&PageStyle=h&customfield=0&SearchValues=&exact=0&keyword=&priceFrom=1500&priceUntil=9999999&idCategory=183&IdSupplier=&withStock=&IDBrand=0&SKU=&order=3&SFID=&SFNAME=&SFVID=&SFVALUE=&SFCount=
But I bought mine through amazon since I could use an amazon payment plan to pay it off over the next 12 months. Just search cpu solutions on Amazon
The CPU comes packaged out to the brim with foam pads in the interior, really secure shipping from my point of view, just make sure to remove it before turning on. Also double check connections to make sure they're totally secure.
Reviews on seller here: https://www.resellerratings.com/store/CPU_Solutions
You can also get a 4080 for around the 3k price-point,https://www.cpusolutions.com/store/pc/Custom-RTX4080-Gaming-PC-Intel-Core-i7-12700K-12-Core-to-5-0GHz-1000GB-m-2-NVMe-SSD-32GB-DDR5-RAM-Windows-11-183p6798.htm
but I'm happy with my 3080 TI as of now (which costed 2800 for the whole pre-built a year ago when 3080TI's were not able to be purchased due to shortages)