Beginner—PLS HELP ME WITH TENSION CONTROL I’m starting to feel dumb

I got some yarn and a 5.5mm hook as the yarn instructed and I’ve been practice for about 4 days now and I absolutely suck. I’m so confused with how to apply tension when stitching. I haven’t made it past the first few absic stitches because I simply can’t get the tension right with my left hand. My stitches either don’t go in because they are too tight or they are way too loose. I just bought one of this TikTok cat tension rings in hopes thst will help, is that a good idea even? I’m really in this for the long ride because it’s been a dream of mine to learn. I’m 29 and am a home body who craves cozy activities and crocheting is dreamy😭 but I’m making zero progress and feel kind of dumb. Any help would be greatly appreciated!