xmp boot problem

I bought a pre built PC with the following specs a month ago: CPUi7-14700F Number of Cores20 (8 P-cores, 12 E-cores) Number of Threads28 Clock Speed2.1 GHz base P-core, up to 5.40 GHz Max Turbo Processor Cooling240mm AIO Liquid Cooling Memory32GB Memory Config32GB (2x16GB) DDR5-6000 RGB RAM...

Hey, this is my first build in around 7? years, so I haven't had to deal with DDR5 before, nor XMP profiles. Unfortunately I have run into an issue where my ram isn't being fully utilised. I purchased two Corsair Dominator Platinum DDR5 32GB 6200MHZ (CMT32GX5M2X6200C36W) and as the title states...

Hey guys I just recently bought new memory ddr4 16x2 3600 CL18 and it's not able to boot with XMP, it's locked into my old speed which was 2600, how can I go about fixing this? My rig: i7 7700k 1080 TI 16x2 DDR4 Z270X-Gaming 5 Im not very experienced with XMP not sure what it does all too...