You can't look like a male bodybuilder without T. Most of the ones you see that are really big are on anabolic steroids in addition to their natural T anyway.
However, you can get really strong and add visible muscle without T. You have to lift often and lift heavy. You also have to eat a lot and I think the veganism may work against you.
What I would recommend is a powerlifting style program to get really strong first. This is primarily the big three lifts, barbell squat, deadlift, and bench press using linear programming where you increase the weight each workout. You will be able to steadily increase strength quickly this way for at least several months before things slow down.
If you are interested in that I recommend the book "Starting Strength" by Mark Rippetoe. It lays out in detail everything you need to know from the program, to how to do the lifts properly, to even diet - eat a lot.
Since I'm on HRT, I did this beginning last June with zero effective T in my system. Today I PR'd my squat and deadlift with five reps at 255 lbs for the squat and five reps at 340 lbs for the deadlift. My bench press is lagging some but is at 155 lbs for five reps. So, the program works, T or no T.
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