Why would recreational riders shave their legs anyway? Its uncomfortable, there are potential issues with ingrown hairs, looks terrible when it starts growing back, scratches you if your pants are tight etc.
Only good reasons to do it are 1. easier cleaning if you have a crash and get road rash and 2. it’s better to have no hair if you’re having a massage.
These 2 reasons are legit for pro cyclists but completely lose relevance when we get to recreational cyclists who still think it’s about aerodynamics.
If you insist on shaving your legs then ignore these bad advices. Apply same logic as you would with shaving your face, for example use normal clean and new blades. Sharp razors mean clean cut with less strokes and that’s what you want, you don’t want old razors scratching your thighs, getting a rash and then going for a long sweaty ride in a saddle after that. Everyone is different so you will have to experiment with razors, waxes etc because it really is individual but don’t go cheap and lazy because especially if you’re doing it first couple of times you gotta be aware that sweat on a ride will increase all irritation by tenfold.