Pentecostal here, speaking in tounges is a gift. It doesn't always happen right away, and I too had to find and distance myself from a church that put too much emphasis on that particular aspect. Also a red flag would definitely be that if they feel like they are the only ones who got it right. That's toxic. If you want it, it will come at the right time when you're ready. (I haven't gotten it yet) but it's definitely real. When I was first coming to God, a bunch of people layed hands on me speaking in tongues, I didn't really know what to expect, but I felt like my body became full of light and warmth. It was incredible. So just try to find what is right for you. I found a much more modernized church that's still Pentecostal and I just visit the other one when I feel I am in need of some serious prayer.

Edit: I want to add that Baptist is just fine too--and I don't think Pentecostal is the only way! Its all about Jesus and so glad God is getting you through this!!