I feel like there is a disparity on effort in my relationship

TL;DR I feel like I am doing everything in my long distance relationship

What do I do?

I (21M) have a sort of long distance relationship with my partner (22F) and we hit it off pretty well when we started “dating”. By that I mean we met in Paris and dated throughout europe. I then went to see her at her home town, where everything in this relationship seemed prosperous. After that, she started acting dry and uninterested, as if i where no one important to her. In my head I thought she was not interested in me, and I started to see other people in sort of secret, the same as herself (although I did not know that at the time) after a while, we kept communication flowing (albeit, not very friendly) and I kept going to her home town for unrelated work stuff, therefore I saw her. She refused to hold my hand at all. To clarify, i was not in an active relationship, neither was she at the time. Little time later, she started killing contact, until I gave up and started seeing someone else more oficially, to which she did not react nicely (fair) and I ended up confessing mu feelings for her. After that, we were on and off with other people until 3 months ago, where we decided to be exclusive, but I still find myself as the only person who goes to her home town. I would like her to make the effort and do the same atleast once (anyway, I still pay for everything)

Am I wrong to want some effort on her end?