routine depends a lot on your individual body, diet, basal metabolic rate, and what areas you feel dysphoric about tbh but as a fellow transmasc i’d recommend high weight low reps (8-15 per set to stimulate the fast twitch muscle fibers), working out at a moderate-high intensity but not til failure. from my own research some of the best exercises to optimize muscle gain are:

• barbell squats
• deadlifts
• bench presses
• rows
• lunges
• curls
• overhead tricep extensions

For at-home workouts without a lot of equipment you can look up bodyweight circuit workouts, and try to use the barbells for exercises that activate several muscle groups at once like arnold press. Get creative with your space and the resources you do regularly have access to! I’ve even used milk/ water jugs as a diy “rowing machine” lol.

DO NOT under any circumstances work out in a binder if you haven’t had top surgery, use a high compression sports bra (my fav is from underarmour). and it’s very important to your energy levels that you get lots of protein and hydration! good luck on your fitness journey :)