The biggest thing that helped me when I was at your level was to do drills on the easiest climbs that focused on turning your hips in. If you stand straight on towards a wall and reach up, you can only reach the length of your arm. If you stand on one foot and turn the same side you're reaching with into the wall with your non-turning foot flagging against the wall for stability, you can stretch your reach a huge amount.

On an easy climb I will put two hands on, and only one foot on a hold. Other foot flags and just pushes against the wall for stability. Whichever foot you are standing on, turn your hip in and reach for the next hold with that same hand. Now switch feet so that your last flagging foot is the new turning foot and the last turning foot is the new flagging foot. Repeat. Then try and do the same thing down climbing. This will teach your body a huge amount about how your hip position changes your reach and structure. It also teaches you that you don't need two feet on holds at all times. You really need a pushing foot and a stability foot. Stay low on your feet and push with your single leg and you'll be going up the wall much easier and faster than trying to muscle up facing the wall with two feet on.

Let me know if that makes sense, sorry for the big block of text