Little Strange...

Yesterday i checked my rating on this site http://www.elometer.net/ i want to know if this site is accurate or near accurate, because it says pretty funny thing, this website thinks my elo is 1800, which is strange, because you see how low is my rating is here. 

The elo meter definitely overrates players, your actual rating is probably closer to chess.coms, but it you may also be underrated on here. It's not a perfect comparison because the chess poll isn't the same, but it's closer than the elo meter

Also just because you have the understanding of a 1800 player doesn't always mean you play at that level consistently enough to get rated the same

yep, i think you are right in both opinions

sometimes i play really well

i have GM friend and he told me 2 years ago my fide rating would be 1500-1700 and i improved little bit after that, but here i am total loser

Hahaha it says that I am 1852. I wish it was true. 

 I have another friend(International master) and he said same

maybe, it's just a friendship

You've played 100s of games here, so that's tens of thousands of positions. That is going to be more accurate than a test that isn't even games, and only has a few dozen positions.

But also, yes, this test over estimates everyone. I took it awhile ago and got about 2300 which is silly (although it was my 2nd time seeing it, and I think they don't time  you anymore right?)

is there any accurate "elometer"?

No. Not even a remotely accurate one in fact. 

The best way to find your rating is simply to get a rating by playing games.

Yes, it's called OTB tournament games

Even books like these:
https://www.amazon.com/Chess-Exam-Training-Guide-Yourself/dp/0975476122
https://www.amazon.com/Ultimate-Chess-Puzzle-Book/dp/190198334X

Aren't so accurate.

tournaments are good thing, but last time when i joined tournament i won games and children cried so i felt bad and don't want do that again