Years ago, I bought a bunch of yarn and hooks and needles and books on both crochet and knitting and set out to teach myself both crafts. I found crochet to be much easier for me and much faster. It was simpler for me to figure out how to stop and start up again and how to recognize and fix mistakes. With knitting, it was more difficult for me to conceptualize how the stitches went together to form the finished product and hard for me to recognize when I made mistakes or twisted or dropped stitches, etc. It took a lot longer to knit too. So for me, crochet was much simpler to learn.
I have since begun to knit and am doing OK with it. Just OK. With practice, I'm getting a better feel for the process and starting to see my mistakes and sometimes even fix them. It takes me far, far longer to knit anything than crochet it. But I like knitting and really want to be able to do both. There are some types of projects that I just prefer knitting for. I love crochet for doilies and afghans and some types of sweaters or trims, but for other things, I just really, really prefer the look and feel of knitting. Crochet uses more yarn and tends to be bulkier and less stretchy. So both have their place and purpose and I like knowing both.
When you decide which one you want to focus on, you may want to consider what you intend to make and let that also guide you in the decision. If it's baby hats and diaper soakers, I'm a fan of knit. If it's afghans, go for crochet. Ymmv.