How do I fix redirects

Hello all,

I’ve been looking at improving my site speed – I am noticing bad grades for not correctly implementing the following chain of redirects the following to my preferred

hhtps://www.cocaintestkit.co.uk

https://cocainetestkit.co.uk/
https://cocainetestkit.co.uk/
https://www.cocainetestkit.co.uk/
cocainetestkit.co.uk
etc

Any help would be great

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