Definitely not a therapist, but if commiting suicide is "easier" than planning your whole life moving forward why feel like a coward for making the harder decision?
You're not a coward for choosing to actually live your life. Life is hard. Unlike suicide, you have to actually put in effort. Because you have to live the whole thing knowing at any moment, anything could happen. You have so many choices. Too many choices. The root of all anxiety is losing control you never even had in the first place.
I'm 23 years old and I've been in an "idk what to do with my life" state for the past like, 10 years. So is everyone else my age, leave one person who I'm still trying to figure out how they just literally always knew what they were going to do lol. To me, that's a superhuman ability, because otherwise no one knows what they're doing. That's why there's so many self help books out there that are all about telling you how to figure out what to do with your life. But the more you don't do anything about that, the more drawn out that will become.
In the past, I've considered suicide, many times. I've hurt myself. I was so apathetic I put myself in dangerous situations with dangerous people. People hurt me and I still often blame myself for it. "Because I asked for it." I simply dropped myself 40ft off a cliff (into water) once and didn't care that my head had merely grazed the cliff itself and another inch closer, I would have actually died. Never could afford therapy and even when I had the chance, I wasn't ready, because I wasn't willing to open up.
Now, I'm kind of starting to realize it doesn't change unless you make that change, even with therapy and medication. You have to look around you and see what's affecting you, and decide whether you are going to use it as a tool to move forward, like as a lesson to help you learn and grow as human being, because if you let it drag you down constantly, it consumes you and those closest to you. The more you open up (it's fucking hard), the more free you feel, like you feel like you can breathe again. Life is way too valuable to throw away. You're 16. You're still like a foot away from the start line. Already at 16, you've made a very strong decision.
Anyway, super long rant. But 100% you are NOT a coward for choosing to actually deal with your problems. You're going to move forward. I'm so proud of you for being alive, truly. Life has ups and downs, sometimes super highs and super lows, my friend likes to point out that when things are shitty, it means there's a lot of good things coming your way in the future. I didn't believe her, but those things did come for me, and good things will come to you too. Nothing lasts forever so obviously that's why you make the most of it when it does come.
If you ever wanna talk dm me. Vent rant whatever.