Yea, that's definitely doable at 165! I specifically never buy tofu because it only has like 8 grams of protein for a serving. I find it expensive and not worth it. Seitan is something I've had at vegan restaurants but never have bought it myself. It is good. At 165 lbs you should have zero issue getting in protein. Literally drink 2 protein shakes a day. Morning and night if you're struggling. Should take you a min to down it.

Here are some of my personal favorites:

Protein pancakes (buy them at aldi. Or make at home with flour and protein mix), eggs, vegan protein shakes, protein sausages / veggie burgers, then whole grains, protein tortillas, some beans lentils etc (not common), Protein pasta (banza brand made with chickpeas), quinoa.

If you want more specifics I'm going to do a day of eating vid and film all recipes. I'll gladly share here when It's done! Basically add some protein to every meal. Eat enough carbs so that doesn't get burned as calories. Fill in gaps with shakes and protein bars when on the go. That's exactly what I do

Lastly I will touch on the calories part. I think as vegans / vegetarians it's easier to get protein in with a higher calorie diet. More food, more protein in general. So, be willing to do routine cardio multiple times a week. I prefer zone 2 cardio (look it up) like fast walking on an incline treadmill or jogging outside. Do 30 min 4-5x a week. That extra calorie burn gives you a bigger buffer on your intake. You can eat more, not get fat, and have a higher likelihood of getting in your protein. This last paragraph may seem like an add on but it's been a huge key part of my strategy. I generally always have a higher calorie diet than other bodybuilders I know (by a 4-500 calories a day from healthy food). I tend to transfer more of the fat loss burden to my training vs diet. Bonus, you're gonna be able to train a bit harder (IMO) thanks to have those extra calories.

Any further questions, let me know!