Used stamps exchanges.

Dear members, I was for a while in 25stampsclub and very happy about it. I recently registered to 100stampsclub but I don't have the same feeling. I know it is not easy to find 100 stamps in the interests of your swapping partner. I spend really hours tp satisfy the demands. But in return, I received covers full of stamps that are not matching to my requests at all.I realize that the sender has even not read my profile, he/she has already an envelope of 100 stamps that he/she wanted to get rid of snd he/she sent it to my address.
I am sure some of you are also in this situation.
What I do in this situation:
1) First of all, I read the profile of my sender to see if he/she values the stamps she is sending to me. Unfortunately he/she says in the profile that he/she doesn't collect these ordinary stamps.
2) Then I send the stamps back when I pick up his/her name.

How can we improve the condition?
Please don't think that my expectation is high. If I find 5 interesting stamps among 100, I would be happy. But if it is 0 or less than 5, I just feel disappointed.

I will give it a chance for few more times, but if nothing improves, I will cancel my membership and I will be happy with 25 and 50stampsclub. But I really want to know if you also had the same experience? It is such a small community here, it is obvious that my sender will be my receiver in 1-2 weeks. How can we make it a fair play?
Nedime

Výměna v tomto klubu je dobrá pro toho kdo sbírá generálně celý svět, nebo hledá známky pro další výměnu se svými přáteli ve svém místním klubu či své zemi, musí tedy počítat s tím že dostane všehochuť. Ten kdo chce doplňovat mezery ve své specializované sbírce tu nepochodí, pro toho je výměna na základě chyběnky - seznamu konkretních známek, případně nabídky kde si vyberu z toho co daný sběratel nabízí (v naší zemi například Auktiva) ze svých dublet. Kdo zde hledá něco jiného musí být nutně zklamaný - podle mne by tu mohlo být jen jedno zlepšení - posílat více známek své země.

The exchange in this club is good for those who collect the whole world in general, or are looking for stamps for further exchange with their friends in their local club or country, so they have to expect to get a lot of stuff. The one who wants to fill in the gaps in his specialized collection will not do well here, for him the exchange is based on a bug - a list of specific stamps, or an offer where I choose from what a given collector offers (in our country, for example, Auktiva) from his doublets. Those who are looking for something different here must necessarily be disappointed - in my opinion there could be only one improvement - to send more stamps of their country.

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Dear Wolfgang,
Thank you for your kind respond. :)
Have a good day.

Hello Nedime,
I see you've only sent eight letters. Over time, you will notice that some members are making an effort to send you stamps on your behalf. Others apparently don't even read your profile and send anything.
Be patient and you will find out the members who practice this hobby fairly.
Regards, Wolfgang