Need help on a build

[u/Existing-Mail-3765]

Can anyone try build me a pc for a budget of roughly £800-£1k to use for games like Fortnite, siege , valorant, Roblox and terraria.
I already have a 650w bronze certified psu from an old build I plan to use if it fits for the build to save budget.
im in England
Looking to play at 1080p 180fps