You can try running the Windows version of Guitar Pro 5.2 on your Mac using CrossOver or WINE. This essentially "wraps" the Windows app to run on macOS without a full virtual machine.
Originally designed for PowerPC and later updated for Intel-based Macs (Snow Leopard and Lion), the software thrived in the late 2000s. If you have an old MacBook or iMac running macOS 10.6 through 10.14 (Mojave), the software typically runs well. The 32-bit vs. 64-bit Barrier guitar pro 52 mac