That one has a pretty low fee, less than 100sats/byte. You got the other, smaller transaction which you sent today right, so that one has already been confirmed. But the big one from yesterday you've linked to ideally should have had a larger fee. If you have any other funds available, you could look at replace by fee, or failing that, you're limited to either waiting patiently, or using a transaction accelerator. It might go through eventually all by itself if you're lucky.
I thanks for the advice I've used an accelerator and I think it worked ! I'm a fucking n00b haha