Feeling pressure to commit to a relationship quickly

Something I struggle with is telling women who are interested in me that I am not ready or willing to commit to a relationship quickly- or even that I am not as interested in pursuing a relationship at all. I sometimes think it’s an intense fear of telling people what they don’t want to hear- on top of my general desire for independence and peace of mind.

I feel like I let it drag out and inadvertently breadcrumb them when I should just nip it in the bud early. I don’t want to be like that because I understand how shitty that makes people feel

Any recommendations on how to set boundaries in these situations?