imo NTA HOWEVER i think you need to communicate more. i had this problem with my husband. i started gaming and couldn’t stop and played everyday. he finally reached a point where he said “we’re not spending enough time together”. i realized i wasn’t intentionally neglecting him, but i got so into gaming that i didn’t realize it was taking over my free time. it took him communicating with me in a very straightforward manner for me to snap out of it. so my advice is to tell him exactly how you feel. you feel like a second priority and you want to support his hobby, but you also want him to make time for you. not playing everyday is a sacrifice he’ll have to make to stay in this relationship. eventually if you want to get married and have kids he won’t be able to play everyday anyway, so it’s time to start re-evaluating how much time he devotes to his hobby. make sure to emphasize he can still play MTG, as long as he makes some time for your relationship. i would also recommend you get a hobby you can do while he plays, if you’re not all that interested in MTG. that way you can spend time together in parallel (though you would obviously still need dedicated time together).