First day being homeless

Hi. I’m 18 years old and in Texas and it’s my first night sleeping in the streets after my parents kicked me out. I have no friends to turn to or family to stay with, so I paid for an uber to take me to a park near my home. It’s a 30 minute walk away from a library but the library doesn’t open till 9am. The park where i’m at opens at 6am but closes at 12pm. I’m not sure what the laws are about sleeping in public parks so i’m afraid someone will come and arrest me. I’m currently hiding in a bathroom stall and the park hasn’t closed yet but i’m afraid someone will come to kick me out at 12. its winter and it’s raining outside, and I am very afraid. please i desperately need advice. I still have money left and my phone is still charged but i don’t know where to go. there is no homeless shelter near me at all.

update: my sister, who i don’t know all that well, found out about my parents kicking me out and is coming to pick me up in a few days. i’m really surprised she offered. she lives out of state but she’s gonna drive here to pick me up. last night wasn’t so bad and no one bothered me at all other then some teenagers who came in and were banging on the door. i’m at the library right now charging my phone. obviously i can’t stay with my sister too long but she said i can stay for a week while i figure something out. i feel more at peace now and i am extremely thankful to you all. i was advised not to respond to message requests so i apologize if i don’t respond but I do see them and i am incredibly great full to everyone. i’m gonna try and convince my sister to let me stay until i can save up for a cheap car off facebook market or something. i’m not as anxious abt this anymore since i realize i still have a lot of options. again thank you.