Please recommend me a best and enjoyable Japanese light novel to read. Any genre except BL, yaoi and yuri.

I have read...
Arifureta Shokugyou de Sekai Saikyou
Yahari Ore no Seishun Rabukome wa Machigatte Iru.
Hikaru ga Chikyuu ni Itakoro...... (Novel)
Rakuin no Monshou (Novel)

Ookami to Koushinryou (Novel)

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Not sure what you mean by best but here's a few novels that I find enjoyable
Ore no Shibou Flag ga Todomaru Tokoro wo Shiranai (Novel)
Marginal Operation (Novel)
Koshaku Reijo no Tashinami (Novel)
Utsuro no Hako to Zero no Maria (Novel) completely translated
Hope you enjoy these as well!

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Asleep

For My Daughter, I Might Even Be Able to Defeat the Demon King (Novel)
Wuming Qishi (Novel) (including the prequel, sequel and spin-off)
Ark the Legend (Novel)
Tensei Shitara Kyuuketsuki-san Datta Ken (Novel)

Mushi-Uta (Novel) Underrated.
Shuumatsu Nani Shitemasu ka? Isogashii Desu ka? Sukutte Moratte Ii Desu ka? (Novel) Very unique.
Kono Subarashii Sekai ni Shukufuku o! (Novel) Funniest comedy LN.
Senketsu no Elf (Novel) A merciless drama.
Toaru Majutsu no Kinsho Mokuroku (Novel) Regularly placed in the top 10 of the Kono Light Novel ga Sugoi rankings.

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"You are weak, from the moment you could only use your life as an excuse for committing crimes, you insulted that very life. You didn't notice, you were afraid of noticing, and you went around destroying everything that could make you notice, but you have also crushed your ability to ever gather respect." -Shokuhou Misaki

The Chronicles of Ghazi (have you heard it?). It is a history based fiction light novel (indeed a "light" and "lite" novel).

If not, then how about some biblically "Bungaku Shoujo" or musically "Sayonara Piano Sonata" for fresh starter?

If you crazy enough to a chalenge, try "...Monogatari" series.

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XP

If you're one of those people who enjoys reading the very first iterations of something like I am, pick up Boogiepop and Others (novel), which I believe was the first ever LN. I enjoyed the series, but they only have 1 through 3 and 5 translated. Thinking of dropping Yen Press a line about it actually, since they're doing Log Horizon (novel), No Game No Life (novel), and a lot of others right now