Unwanted attention despite dressing modestly - need advice, sisters

Assalamu alaikum everyone, I have a sincere question and would appreciate your perspective. I’m a 21F, hijabi. I dress modestly, avoid male friendships, and only interact with men when necessary. My friends tease that I “act like I have a husband and three kids” because I’m so reserved. Even so, my whole life I’ve attracted attention from men, especially non-Muslim men, in public places like school and work. Strangers will approach me out of nowhere (ask for my social media, ask personal questions, try to be flirty), and some male classmates or coworkers try to “get to know me” and cross professional boundaries. This isn’t occasional - it happens often, and it makes me uncomfortable and sometimes even scared because of how persistent they can be. I do care about my appearance. I like to look put-together, spend on clothes, jewellery, and self-care, and won’t leave the house unless I feel presentable. This isn’t to seek attention; it’s for my own confidence. I don’t post online, keep things private, am not friendly with men, and I’m not pursuing marriage at the moment - I have other priorities. My question: why might this still be happening, and how can I reduce unwanted attention without feeling like I have to make myself look unkempt? I often blame myself, thinking I must be doing something wrong, but most of the time I’m just living my life. I don’t want random attention from strangers, and I don’t want to have to tone myself down to be left alone. I’d really appreciate thoughtful advice or insight from sisters who’ve experienced similar things. Edit: I’m not seeking attention with this post - I just want to know if others go through this and what I can do to feel safer or less noticed. Brothers, please don’t DM me. You can leave comments here or simply scroll. Jazakum Allah khair.