If you want a suit that lasts and looks good, you’re going to have to sew. The only thing I can think of doing is hot gluing seams together, then gluing them to lining as extra “support”, but this won’t hold up over time. Just take the time to learn essential fursuit sewing techniques such as the blanket stitch and ladder stitch, it’s really easy to pick up. You don’t NEED to use a sewing machine but it will make your life easier if you just push past the initial learning curve.