What exactly have you been trying to achieve?
If your goals are primarily related to physique/body composition, then it goes beyond just eating healthily and training frequently. To an extent, just doing these things will give results (as you've experienced), but the most dramatic results require an extra step in diet and training.
Diet-wise, the extra step is to go through phases of weight gain followed by phases of weight loss. It's easiest to grow muscle mass whilst generally gaining weight (since muscle mass is calorie-dense body weight), and it's easiest to lose fat whilst generally losing weight (for the same reason). General weight gain is caused by the consumption of more energy (calories) than you expend; general weight loss is caused by the consumption of less energy than you expend, thus it's easier to gain muscle and then lose fat than to try and do both at the same time (you can do both at the same tie, however it's usually a slower, less reliable process, which may explain your current issue). During weight gain phases, I'd aim to gain about 0.5lb/wk, and during weight loss phases I'd aim to lose about 1lb/wk. You can gain or lose more than that if you want to, however gaining weight too quickly will disproportionately increase the amount of fat gained in the process (you'll almost always gain some fat while gaining weight), and rapid weight loss tends to come with loss in muscle mass and a sharp decrease in metabolic rate, meaning that you both lose the progress you've worked for while gaining weight and you stall quickly while losing weight. So a modest change in weekly weight tends to be better. In other words, when gaining weight, eat as little as you can while putting on mass, and when losing weight, eat as much as you can while losing. A weekly gain of 0.5lb means consuming roughly 200-300kcal/day more than you expend, so if you expend 2,200kcal/day, you'd be eating about 2,500kcal (there are calculators to estimate this stuff, but ultimately it'll still come down to trial and error), and a weekly loss of 1lb means a deficit of roughly 500kcal, so if you expend 2,200kcal/day, you'd be eating about 1,700kcal/day.
The most important factor when it comes to training and causing your body to change is progressive overload, which generally comes in the form of more, more or more: more weight or more reps or more sets. So, if I squat 2x10x100lb this week, next week I want to squat 2x10x105lb or 2x11x100lb of 3x10x100lb. Weight and rep progression is best for most people, but there are times when more sets is appropriate progression. There are other forms of progression, too, but they're typically more subjective. For example, last week and this week I bench pressed 3x10x60kg, however this week the sets were better and technique was more reliable. On paper it was the same, but progress had occurred. It's easier to achieve progressive overload while gaining weight than while losing weight, however it can (and should) occur in both phases. Progressive overload and building muscle have a bit of a chicken or egg relationship: building muscle allows progressive overload, and then utilising that progressive overload is key to building more muscle.
So, eat more to build muscle, eat less to lose fat, and practice progressive overload.
