Confused with 301 redirects. (Bangs head against wall)d monitor

Hello.

I’m trying to redirect a main domain to a main domain with a sub-folder.

e.g

redirect 301 .co.uk/ to .co.uk/wordpress/

But the pages on the old domain I want redirecting too.

e.g.

redirect 301 /drums.html https://***.co.uk/wordpress/plastic-drums/

I’ve got redirects enabled in the .htaccess file but I’m just confused as to what is the best method as I don’t want to be penalised for any bad links. I’ve seen so many slight variations, can’t see the wood for the trees anymore today so I’m calling for help before I scratch out my eyeballs in frustration.