Hello! I can give you some tips.
To have a successful swap you should have coins that other people want, and you should find coins that you want to have that are not very rare or very specific. I see that you collect 2 euro commemoratives but I don't see any 2 euro commemoratives in your swap list. And you coins in the swap list are relatively common so maybe people are not that interested in them. My advice here - find and add 2 euro commemoratives from circulation. Especially people will want the newer 2022-2023 years. I am sure you can find some in Spanish ones. And people will want them.
It is better to propose swaps first rather than just wait for someone to contact you. The best way to find people in my opinion is to see some active profiles, go to their reviews from the last few months and click on those profiles. And then from those profiles find other profiles. Send 5-8 requests to those people and maybe you will negotiate something.
Since your coins are not that expensive, it will probably make sense to swap within the country (or within the EU, I am not sure how expensive it is, within Spain vs. within EU).
Since you have 0 ratings, propose or be ok to send the coins first. And if people have a lot of good ratings, just trust them. Most people here are very honest.
Good luck!