I'm not suggesting you give up but the fact it is that some people simply do not have the ability to play an instrument or at least their instrument of choice. I have a friend who started playing guitar in the 1970s. He took lessons and practiced much more than any of our mutual friends or I did. He never even got good enough to play in a garage band. He loved music and wanted to be part of a band so he went to school and learned to run sound. He became a very good sound man and was in high demand until many of the local venues closed, converted to sports bars or karaoke.
If becoming proficient at something was simply a matter of practice, we could all be a virtuoso. We could all play major league baseball, be in the NHL, NBA or NFL. We also need to have natural ability. Practice will help develop that ability.
My advice would be to take lessons. Make sure to research teachers in you area and do not simply take lessons form the first person you find on Craigslist. Music stores are a good place to start. Follow a practice routine. Maybe a 5 or 6 hours per week. If after a few months, you feel like you're not progressing, try to figure out why. Ask the teacher what you are doing wrong that way you will have an idea on what you work on. Maybe you would be a better drummer, guitarist or keyboard player.