Normal behaviour ? Hermann constantly wants to escape

[Lisad]

Hello, I'm hoping for some advice as I'm really not sure what more I can do for my tortoise.
I am in Italy so he lives outside year round, he brumates from November - March without any issues.
My problem is he spends all his day pacing his enclosure and scratching and banging to come out. It's so loud that I can hear him when I am inside and have my windows and doors open.
His enclosure is 8x4 (minimum I know but he's still only a small fella) and I've really tried my best to make it as stimulating for him as possible but still he's not happy. Even when I give him access to the whole yard he will display the same behaviours so space doesn't seem to be the issue as it's never enough.
I'm not sure what more I can do, I hate seeing him so distressed and the other day I found him on his back so I'm worried he will hurt himself. I will attach a picture of his enclosure. I'd appreciate any advice, thanks for reading.

 

[Alice Sulcatia]

That's a lovely enclosure. Regarding the behavior, could it be seasonal? Is there something outside his enclosure he is trying to get to? Does he calm down after soaking time? Could there be some ladies around that he spotted? Have there been changes to his diet? Do you have an ant problem by any chance, and he could be trying to escape them?

 

[Lisad]

That's a lovely enclosure. Regarding the behavior, could it be seasonal? Is there something outside his enclosure he is trying to get to? Does he calm down after soaking time? Could there be some ladies around that he spotted? Have there been changes to his diet? Do you have an ant problem by any chance, and he could be trying to escape them?

Hi, thanks so much for your reply and advice, I really appreciate any help!
This is just my second summer having him and he's my first tortoise so I don't know if this is normal, it's very hot here at the moment and I thought that would slow him down but it's having the opposite effect, he's becoming more and more agitated each day. From 7am until 8pm with only a few breaks in-between. The noise from his shell hitting off the wood is extremely loud and frustrating
His diet is fine, I pick him weeds, clover, cicoria etc and some flowers but some days he doesn't even eat because he's so focused on escaping.
Yes there has been an ant problem recently (black ants) so we are doing what we can for that but even when I give him access to the whole garden he will find a wall and continue to pace and try to climb it.
I'm so upset and stressed for this situation because I've tried my best to give him a good life and keep him safe but it's never enough. I hate to say this but I'm no longer enjoying taking care of him, I am seriously considering finding him a new home with people more experienced than me. Thanks again for your help