I feel like this is describing me perfectly when I first started playing USTA matches. I learned to play a bit in Middle School to High School doing the kids clinics. Getting into USTA as an adult, I assumed it be really easy and that even at a 3.5 level, I would not be challenged. I self rated as a 3.5 and had a team practice. My teammates were impressed with my abilities (just hitting around) and I was relatively unimpressed with them as they were all much older and hit the ball softer.
My first 3 matches, I lost like 6-1 6-1 or 6-0 6-1 etc. People were not hitting super hard but they were consistent. They didn't make a lot of errors where as I tried to "win" the points. I did not know what to do in a match anymore and I think this made me anxious. I would try to go for it even more to try to win points. I don't think I could even conceive of winning points any other way at this time. This lose streak continued until i was like 0-11 or something like that. At this point I had regretted even joining as a 3.5 and wished instead I self rated as a 3.0. I finally won a match because my doubles partner told me, you would win more if you just got more balls in play.
I took this advice to heart and finally realized, I just frankly sucked. I wasn't losing to worse players, I was the worse player. I spent the next year training on just focusing on hitting the ball well cross court. I got pretty good at being consistent and hitting the ball back cross court. They were not super hard but just loopy lots of topspin cross court shots. Nothing else on my ground stroke games. The next year, I went from losing all the matches to winning most of my matches and even getting bumped to 4.0. As I got better, my shot pace and percentage kept going up. Tennis games started to feel "slow" for me. Like I had plenty of time on every ball because I was only trying to do one thing, hit it with topspin cross court. Because it felt slow, I felt I had more time to go for a slightly better shot. This only worked because I spent so much time just going cross court, I felt like my strokes were grooved. Anytime I felt unsure or didn't know what to do, just went cross court loopy. Any time I felt the point slow down, I would go for a slightly better shot, maybe like 10% more effort.
Going down this path, I continued to get better, hit better and harder shots, and now I relish the slow balls. Over time I have gained enough confidence that I now know what "playing the point" means to me. Slow ball deep, I am ripping cross court hard. Rinse and repeat until I get a short "slow" ball. Then I am ripping that into the open court. Anytime on the run or not sure what to do, go back cross court. This has more or less worked for me and I am now a 4.5.
2 years as a 3.5
3 years as a 4.0
first year as a 4.5
Long story short - I just learned to mindlessly hit balls cross court and not try to do anything else. In the process, I got really consistent and could beat people in the consistency game. Spent years playing this way and I slowly got better learning how to hit other shots too on occasion.