I am struggling with the same part of my game as well. It sounds like we both need to study middle game strategies.
Pode conversar comigo em português também. Morei no Rio Grande do Sul por 2 anos servindo um missão pela Igreja de Jesus Cristo dos Santos dos Últimos Dias. Faz tempo, mas ainda falo a idioma. Adoro Brasil meu amigo!
My friend I deal with the same issues when it comes to chess...I would suggest learning to decipher when one part of the game ends and where the next part begins, always try to develop your pieces Efficiently and don’t underestimate your opponent. I wish you luck and hope this helps