First solo trip 1 month April-May. Where to go?

Hey everyone - I have 1 month free and would like to use it to see some new places solo for the first time.

For context, I am a 26 year old male from the UK. I enjoy a good mix of retreats in nature and the nightlife of a city. I’m also gay and a vegetarian lol.

I have previously been to Spain, Greece, Netherlands and India, all trips have been 1-2 weeks. The only time I have been away solo was last summer when I went to Madrid (love the heat, but was a little much even for me). I chose Madrid because I wanted to experience its huge pride event. I have an interest in experiencing big events in other countries, eg. Holi in India, Halloween in Salem, St Patrick’s Day in Ireland - so if there are any notable events coming up in April/May that may sway my destination choice.

Places I’ve considered are: SEA Asia, Southern Africa, Balkans, Central America, east coast USA.

Depending on where I go, I may start off with a 1 week tour, eg. Southern Africa or Central America, as I feel in those places it may help ease me into things. Whereas I think I’d be OK in the USA or Balkans.

Volunteering a little interests me too. Hostels are my preferred type of accommodation for meeting people, but I think living with locals and immersing myself in day-to-day life would be really insightful.

This trip would be.. literally within 2 weeks from now. Very last minute! Because of that I recognise flights are quite expensive (and with all that’s going on in the world right now). I’m a fairly low budget traveller, so this very well plays into my decision.

So that’s it really! I’d love to hear any recommendations or general thoughts from anybody. Thanks :)