Is it really that difficult, brothers and sisters?

Assalamu alaikum. I’m in my mid-20s and I just began professional school. By the time I finish I expect to have a stable job and gradual salary increases each year. In the past I was interested in one man for marriage, but he wasn’t in a stable place so I stepped away. Maybe if he becomes stable I’ll think about it, or maybe I’ll meet someone else - I honestly don’t know. Right now my focus is my studies, but my parents keep pushing marriage. They try to introduce me to men I have no interest in. To them, marriage seems to be everything; they don’t praise my academic or professional progress. They worry I’ll end up alone, and I tell them I’ll look when I’m in my late 20s or nearly finished with school, but they insist that will be too late. Marriage feels scary to me. It’s starting to irritate me when my parents bring it up because it triggers memories of difficult situations I’ve witnessed in the family. If I’m not ready and want to work on myself, why should I lead a man on and risk ruining his life? Is it really that hard to find someone if you wait a bit and are a little older? The pressure has made home feel toxic, and I don’t know how to handle it. I don’t want to marry someone chosen only by my parents; they don’t seem to understand what I want. Are there any sisters or brothers who eventually found a spouse on their own later on? I’d appreciate any advice or personal stories. JazakAllahu khayr.