My setup:

• Engine: GameMaker or Godot
• Art: Aseprite, maybe Inkscape or i give Photon Studio a try :)
• Sfx: Bfxr, Beepbox, FL Studio
• Music: FL Studio or just also Beepbox
• AI: maybe some claude help for coding stuff

Tips

So what else to say from a veteran ? - Make a game (better a smaller one) - Use tools you know best - If you are planing to going solo on jam please note that you are in competition with whole art teams :) But besides that you have a also a chance. - Have fun - thats the most important part. - Don't hydrate and don't stress out