Unauthorized sites frequently bundle malicious code, spyware, or adware inside compromised APK installers. Use reputable antivirus software to scan files before running them.
Because Google Play limits APK sizes to 100MB. Any game larger than that (and Tomb Raider is several gigabytes) must split its data into an APK + OBB. When you download from the Play Store normally, it happens automatically. When you go for a free download, you must manually place the OBB file in the correct folder. tomb raider apk obb download free