Do what works for you. I get really sore wrists if I tie. sometimes I machine tack. Usually I machine quilt. It's OK to tie your quilts. Many people prefer them that way.
If you are having trouble with machine quilting, there are some main reasons for that, IMHO:
1. no walking foot (called by various names)
2. trying to do free motion work without dropping/controlling the feed dogs and using an embroidry/darning foot.
3. poor preparation a. You need to press the whole quilt well before you start.
4. poor preparation b. You need to pin/baste well before you start.
5. poofy batting without a LA takes lots of skill/practice. Don't try to start there.
Remember, none of us is perfect. neither are our quilts.
Tying has its own problems. My dear hubby wanted a poofy tied flannel quilt. I made him one. His parrot crefully untied nearly every tie. Some small children do thsat too.