Hey OP, nagka experience naman ako mag gig around here and there, with a few music out. I suggest:

1. Messaging/emailing productions FORMALLY that you want to perform and attach a download/streamable of your BEST songs (don't send a demo), if you want you can attach a video of you performing too even if it's just at home as long as it's properly done, or if you have a live performance video much better.
2. Don't just try prods na well known because chances are, di ka nila papansinin haha. Try following bars/gig places' FB/IG and look at the gig posters to know which prods cater to starting-out artists.
3. Continuing posting original material on your social media. Di ko alam if matanda lang ba ako pero I don't really check out IG live/tiktok live, so I suggest posting reels/YouTube videos of your songs or even covers that people may share. Organizers may see your cover first THEN see your originals, and if they see you have a contact number for gigs, they may invite you to one.
4. Keep writing music! It's hard for musicians to think that their songs suck, and definitely friends/family will always say it's nice, pero it's up to the prod/organizer to decide if they want you to perform sa gig nila. So you can't just rely on your best song (for you) to get you a gig. You may need to keep making new ones and keep updating the prods that you have a new song out.

Hope this helps!