which os is best widnows 7 or windows 10 or ubuntu or mac and what is you recommendation

The "best" operating system (OS) depends on your specific needs, preferences, and the hardware you're using. Here's a breakdown of the four operating systems you mentioned:

### 1. **Windows 7**
- **Pros**:
  - Familiar interface for those who have used it traditionally.
  - Good compatibility with older software and hardware.
  - Lightweight compared to newer Windows versions.
- **Cons**:
  - No longer officially supported by Microsoft (as of January 2020), which means no security updates or support.
  - Limited features compared to newer operating systems.

### 2. **Windows 10**
- **Pros**:
  - Regular updates and new features.
  - Better security and performance compared to Windows 7.
  - Wide compatibility with a vast array of software, especially for gaming and productivity.
  - User-friendly interface with customizability options.
- **Cons**:
  - Some users express concerns over privacy and telemetry data collection.
  - System requirements are higher than Windows 7.

### 3. **Ubuntu (Linux)**
- **Pros**:
  - Open-source and free to use.
  - Strong community support and a variety of distributions available.
  - Generally more secure than Windows, with fewer software vulnerabilities.
  - Lightweight options can run well on older hardware.
- **Cons**:
  - May require a learning curve for users accustomed to Windows or MacOS.
  - Compatibility with certain software and games can be limited.

### 4. **MacOS**
- **Pros**:
  - Excellent integration with other Apple products.
  - Strong focus on design and user experience.
  - Generally regarded as stable and secure.
  - Good support for creative applications (graphic design, video editing).
- **Cons**:
  - Limited to Apple hardware (Mac computers), which can be expensive.
  - Less customizable compared to Windows.

### **Recommendations:**
- **For General Use and Compatibility**: **Windows 10** is recommended for most users, as it offers a balance of performance, security, and software compatibility.
- **For Older Hardware or Open Source Enthusiasts**: **Ubuntu** is a great choice, especially if you value open-source software and are willing to adapt.
- **For Apple Ecosystem Users**: **MacOS** is the best option, particularly for those invested in Apple's products and software.
- **Avoid Windows 7** unless you have specific legacy applications that require it. Otherwise, for security reasons, it's best to move to a newer version.

Ultimately, the choice depends on your specific needs, hardware, and personal preferences.