short answer, yes.
long answer, yes but only do it if you find it fun/rewarding and you hate DM. DM/TDM will always be better for in-game improvement. Its like training for a sport, lets use basketball as an example. You can go to the gym and train your body to jump higher, run faster and you will become a better athlete and you may get better at basketball. But if you just played basketball, ran drills, played pickup, worked on your shot in the gym, you are guaranteed improvement with time, you may become a better athlete in the process but you will undoubtedly become a better player.
Same thing with aim trainers you can become a better aimer and that may help you improve, but playing deathmatches will help you get better at valorant quicker than if you grind aim trainers. I remember a number that plenty of aim training community people say (viscose, mattyow) that no more than 10-15% of your play time should be spent in aim trainers.
But if you reach a plateau in your improvement, try what you can. Aim trainers certainly helped me when i was hard stuck ascendant.
GL with your improvement bro.
(Im immortal with a 60% vandal headshot and I have like 200 hours in kovaaks if you care about credentials)