HELP! New to PC Building

[PurgatoryVision]

I am new to the whole PC everything, I used to believe that a Macbook Air was a powerful computer ( Drank Apple's Tea)  Anyways I want to build my very first PC for gaming Mainly,

I mostly only play Warzone & the Occasional RDR 2. My Budget is as Small as possible! & i'm not looking to get 240 FPS. I'd love to be able to play at 120 FPS at Decent Grapics as for I own a LG Ultragear 1080p 144hz Monitor.

I would love to stay under $400 USD if at all possible not looking for RGB nothing fancy this will be hidden (well ventilated) I own 16 Gbs of DDR4 (3000Mz) Vengeance Pro (bought almost a year ago for "Work") I need Help with a decent Mother board that will allow me to upgrade down the line to a better CPU and graphics card. Thank You All!

 

 

P.S trying to build it to get my hand on and in the pudding, not buy a Dell Optiplex, Stick a GPU and call it a day. Also I am in the USA! Prices in USD Please!

[PurgatoryVision]

2 minutes ago, NZgamer said:

What country?

USA

[PurgatoryVision]

1 minute ago, NZgamer said:

You're asking too much for $400 USD, you're not going to be able to get a GPU,  You're not going to be getting 120FPS in Warzone, because that's quite a demanding game and you'll probably see 30-40 FPS on the iGPU, and probably the same thing with RDR2, which is quite unoptimised.

Here's what I have for you:

 

PCPartPicker Part List

CPU: AMD Ryzen 3 3200G 3.6 GHz Quad-Core Processor  ($99.99 @ B&H)
Motherboard: Asus TUF B450M-PLUS GAMING Micro ATX AM4 Motherboard  ($93.98 @ Newegg)
Storage: Kingston A400 240 GB 2.5" Solid State Drive  ($34.99 @ Amazon)
Storage: Seagate Barracuda Compute 2 TB 3.5" 7200RPM Internal Hard Drive  ($54.99 @ Newegg)
Case: Deepcool MATREXX 30 MicroATX Mini Tower Case  ($34.99 @ Amazon)
Power Supply: EVGA 500 W 80+ Certified ATX Power Supply  ($72.90 @ Amazon)
Total: $391.84
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2020-07-07 16:42 EDT-0400

 

But at this price point you're absolutely going to get a better experience with a Dell and a GPU, but I do know you don't want to do that

That's why i'm here to get help, I figured $400 would not be enough. what do you think adding a GPU to this set up bring me in FPS. Thank You for the Speedy Response!

[PurgatoryVision]

3 minutes ago, NZgamer said:

Well, with the 3200G I probably wouldn't pair it with anything better than an RTX2060. The integrated graphics in the 3200G is great, but it is a huge bottleneck to the 3200G's performance. You're going to see a huge FPS increase in all games with a GPU. How much do you want to raise the budget?

$650 USD would be my cap.