Good for you! I've spent the last year or so reducing the amount of meat we eat as well, and it turned out to be easier than I expected. We're down to about once per week of poultry or fish, no red meat.
My main piece of advice is, focus on meals that aren't intended to have meat in them, rather than trying to substitute out the meat for beans or something else. Tacos/burritos and bean burgers is about the only exception, as far as I'm concerned. Salads are great, but not always as filling as you might want.
Chili is great, we make ours with 3 kinds of beans for variety, served with rice, bread, or corn chips. Indian food is a great resource - chana masala, dal, palak paneer, and rajma are all fantastic, full meals, served with either rice or flatbread, and so filling you'll never miss meat. I do a great veggie lasagna, layered with carrots, onions, broccoli, or whatever else you like. Veggie-based soups are also great - black bean soup, minestrone, etc. I also use eggs a lot, in frittata, quiche, or just omelets.
What kinds of food do you enjoy? If you take any culture's food and look at the basic staples, you're likely to find a lot of meals that have little or no meat, due to meat being more expensive in the 'olden days.' If you're getting tired of pasta, look at cultures where rice or potato was the staple food, rather than wheat.
ETA: If I'm feeling like my menus are getting stale, I look online for a new vegetarian recipe to try. I've been enjoying this woman's recipes:
https://theprudenthomemaker.com/meatless-dishes/. Her white bean alfredo sauce and rosemary white bean soup have entered my regular rotation with minor tweaks, and I'm trying out the zucchini potato pancakes tonight.
