Network Device Basics Challenge 1.2 and 1.3

I was doing these labs and I got the answers correct and got the flag on 1.3 but I had a problem on both. On 1.2 Linux-2 was unable to ping the internet or the firewall even though I had changed the setting as instructed. On the next challenge I did everything and got the flag but Linux-1 won’t get an IP from dhcp. I know I configured it correctly because I was able to get the flag and I triple checked the interfaces file. It shouldn’t matter because I was able to move on but I hate when I feel like I got the answer but still did something incorrect as I’m a perfectionist. I snapped a photo of the 1.3 problem if that’s needed. The lab closed at the time of me writting this so I guess I won’t know exactly what I did wrong.