League of Legends (LoL) Question: Serious question about the importance of having your runes "meta"

Runes are meta for a reason (amongst others), which is:

- Cost-efficiency. Probably one of the biggest reasons. You get the most out of your stats for the slots the runes fill for a specific type of champion. For example, it used to be the case that Armor Seals and Health Quints were standard. After the rune changes, Health was more efficient on Seals and Armor was more efficient on Quints. Then there's the obvious facts each type of rune is more suited towards specific types of stats: Marks = Damage, Seals = Defense, Glyphs = Abilities, Quints = Master of All; so it makes little sense to equip AD Seals, for example.

- Standardized. It's been tested and used by hundreds of thousands of different players and have proven effective for doing what it's supposed to do, be it clearing the jungle quickly, scaling well, etc, etc.

This isn't to say that you shouldn't have runesets that are outside this meta, and there are some that are, like Yasuo.

To put it simply, runes are meta because they've been calculated and tested to give you the optimal stat output. 'Non-meta' runesets tend to have a specific situation in mind, like playing against an all AD composition or something like that.

Your runes are mainly correct, I feel like runes are really right or wrong, if you aren't using optimal runes you are just holding yourself back. The more rune pages you have the more lane diversity you can play into.

For AP vs. AD
Hybrid pen is good vs. a melee ad champion. If you aren't playing a champion that wants to trade with auto attacks then they are a bad choice. If you are running against a mixed damage lane run AR and MR runes. MPen is better for clearing waves with abilities and assassin damage via abilities for mashing abilities.

Top lane is really champion specific but if you're runnning the meta tank role you run armor @ 18 and mr @ 18. Quints and marks are more specific, A champion like kayle needs as marks ap quints, ryze needs mpen marks ap quints, I don't have a large champion pool top lane so I can't really elaborate further.

Adc has 2 main pages.
the first is
ad marks
ar seals
mr glyphs
as quints
Swapping in 4-5 as glyphs can really help your cs count, exchanges vs a low to none ap lane, and activate passive abilities, ex braum, vayne, twitch etc.

for support there are two pages in the meta
The first is the tanky page for sustain in lane when you have no shields or heal abilities.
ar marks
he seals
mr glyphs
ar quints
Necessary on braum thresh morgana. Braum and Thresh seem obvious, this page on morgana is best for getting the ult proc without dying
The second page is for the ap ranged support that use aa and abilities to win lane and buff your carry.
hpen marks
he seals
ap glyphs
2 ar quints
1 ap quint
Used on champions like nami and janna to buff their heal/shield abilities in the early game and get extra damage from auto attacks and the +10 damage on spell thief (run bandit mastery)
Lemme know if this help!