Thinking about taking my Shahada and looking for some advice

Okay so, here's the story. I was raised in a really Catholic home, spent pretty much my whole childhood in church. But when I started playing sports more seriously, I was busy every Sunday and kind of drifted away from faith. After I graduated, I pretty much had no spiritual connection at all-I'm in my twenties now. This time also came with a lot of struggles with my mental health, alhamdulillah. Over the last year, I've been working on getting my life back, starting with my physical health, which really helped my mind too. I first got interested in Islam through my respect for Khabib Nurmagomedov. Then, about three weeks ago, one night I decided to pray to Allah. I found a video on how to pray and just did it. When I finished, I felt this huge sense of relief and gratitude, mashallah. After that, I kept praying. I wanted to explore Islam on my own terms, not because someone else told me to. For two weeks straight, I prayed five times a day, every day. I wanted to test myself though, since I have ADHD and sometimes get really into things for a while and then drop them. So I didn't pray for three days... and I honestly missed it. I missed that connection with Allah. So now, as of today, literally no one knows about this except me, but I've decided wholeheartedly that I want to be Muslim. My question is: how do I go about taking my shahada? Should I call the masjid ahead of time? Is there a specific day or time that's better? Do I need to bring anything, and do they have prayer mats there or should I bring my own? Jazakallah khair for any help or advice!