I built a PC back in 2019 then upgraded to a graphics card a year later. All has been fine (I don't AAA game on it, just general personal and work duties), until about 6m-1 year ago when it would start to occasionally crash, getting slower and now it can't upgrade to windows 11. What bits should I be replacing to update it. Parts listed below. Thank you in advance.

CPU

AMD Ryzen 5 2400G

Raven Ridge 14nm Technology

RAM

16.0GB Dual-Channel DDR4 @ 1065MHz (15-15-15-36)

Motherboard

Micro-Star International Co., Ltd B450 TOMAHAWK MAX (MS-7C02) (AM4)

Graphics

8192MB ATI Radeon RX 580 Series (Unknown)

Storage

223GB KINGSTON SA400S37240G (SATA-2 (SSD)

931GB Seagate ST1000DM003-1SB10C (SATA )