While honesty is generally the best policy in friendships, there might be situations where you feel uncomfortable revealing the whole truth. In such cases, it's essential to consider your friend's feelings and choose an excuse that is believable and respectful. Here are some plausible excuses you can use:
Busy with Work or School: You can say that you had a hectic few days at work or school, and you were trying to catch up on pending tasks and deadlines.
Family Commitments: Mention that you had unexpected family commitments or responsibilities that required your immediate attention.
Health Issues: You can say that you weren't feeling well and needed some time to rest and recover.
Traveling or Limited Access to Phone: Tell your friend that you were away from your phone because you were traveling or in an area with limited network coverage.
Personal Projects or Hobbies: Mention that you were engrossed in personal projects or hobbies that demanded your full attention.
Need for Personal Space: You can be honest about needing some personal space and time to sort through your thoughts and emotions.
Remember, while using an excuse is acceptable on occasion, it's crucial to address any underlying issues or conflicts in your friendship eventually. Open communication and honesty are vital for maintaining trust and understanding in any relationship. If possible, find an appropriate time to talk to your friend about what's been going on, and strive to resolve any concerns together.