Ok so I'm not that good at explaining but I used to have like 2 friends and now I have a rlly big friend group so I hope to help-
The main advice for meeting new people id say is to find something you GENUINELY like about the person, aesthetic, clothes, maybe pins.. and compliment them! They will usually thank you so then you ask about it, how did you get the idea? Where did you get that? Stuff like that, then you try relate "I've always wanted to try that!" "Omg I've heard that place is rlly cool!!" From then if you vibe eith them and you can have a small conversation, ask to follow them on something or get a form of contact from them
If you want a lot of friends, try connect with someone who has a large friend group- but that can be suuuper nerve-wracking, meeting so many new people.
Of course, making new friends is rlly hard so I suggest to start with going to public events and trying to get out of the house, trying to get used to the feeling of exposure out of your comfort zone.
I'm sorry I'm not too great at explaining but I hope that it all works for you and pls don't surround yourself eith toxic people, the best of luck!!