i rememebr something that my T told me about people who "run away" like your friend did.

see: you think from the POV of this society:
"i have depression , i am not o.k....i should hide it.. i am "weak" maybe.
(i don`t say that you think like this for sure.).but -
then she "the normal" and had a "normal" reaction -"ran away".

who is "the weak" here??

SHE can`t "contain"this though, she maybe has a hard time facing the fact of some mental illness...you were brave and open.
and she is sort of "weak" not used to it..
she has this boundaries those stygmas and steriotips.

just another POV.

"Even though my mum and family members want me to try to have more then one friend lol"

the real Q? i if YOU want to have many friends. if you are comfortable with 1 friend and feel you don`t need all the others......

"is that people pretend to be my friend cause they either feel sorry for me or they just want me to be their friend cause their shallow and just think of me as a number. "

-well, you posted in the right forum!
why do you feel like that?
do you think your friends are in any way BTTER thank YOU?
what on earth makes them better? they have higher powers? they can fly?

i also remember that Kittie Baron said something about the opposite...

it`s not THEY think of you as a number and feel sorry for you....i suspect it is YOU who thinks so..because..you think those thoughts in your head and then you behave like that. in a way that can make them go away because you think the are either too good for you (subconciously) or that you don`t deserve?

i wonder:
you felt unconrtable with the thoguh that you have depressions and then you low self esteem makes you act like that....maybe let`s relpace the word "my fault" with
" my CHOICE"....because we do things our of concious or subconcious choice.

do you feel you DESERVE to have friends?
do you feel you have something unique, interesitng...that you are WORTHY and people can get interested in you?

does it make sense to you or you think that most chances are that you have nothing nice and special in you and thus your friends are with you our of pity...i don`t believe it by the way. no 1 will hang out with some1 else because he feels he HAS TO. most of the time they want to.

if you look inside deep enough you willl find those things that make you unique and interesitng and charming.
you may have those judgmetal thoughts as a reslolt of this habbit of lookign at yourself from the outsied-instead of letting yourself see from inside. feel free to be exacly what you are. at the moment. know you HAVE THE RIGHT. you don`t need a stamp of aproval from anybody else.

that being said, i think you MAY have done sometiems here and there things that would makes others go away--but it`s not because something is worng with you-but becasue you THINK that something is worng with you! becasue you may think that you don`t deserve their presence, because you may feel uncomfortable and say "by mistake" the negative things about yourself.