Im not sure LP is working right

if you are in a major losing streak then yes.

no

no i can prove too.. I had a loss after 2 wins i was up 23 lp in b4 .. now all gone 0

The amount of LP you gain or lose depends on the matchmaking difference between your team and the team you are playing against. If their matchmaking rank is higher than your and you lose, you will lose less LP than the other way around. Here are the FAQs that explain how it works. A 23 LP point gain or loss isn't that uncommon.

Here are the related part of the FAQs:

#What determines how many League Points I gain from winning a match? There is only one factor that affect the amount of LP you get - the perceived difficulty of the match, which is based on the MMR difference between the two teams. Being a part of a duo, kill/death ratios and other statistic does not affect your LP gain.

#Why does everyone earn different amount of League points? If your MMR is significantly lower than where the system believes you should be for the division you are in, then your LP gains will be reduced and LP loss will be increased. Alternatively, if your MMR is significantly higher compared to the average for any given tier or division, you will gain more LP and lose less. You may even skip promotion series or advance multiple tiers if your MMR significantly outweighs your league.

good to know ty