New bike check. What should I change?

I haven’t ridden a BMX in 10 years and wanted something affordable I can mess around with. I came across this older 20 inch Eastern bike with Odyssey parts. The handlebars, brake, pedals, and tires are all Odyssey. The rest is all Eastern. The seat isn’t the comfiest but I understand it’s a BMX. It’s pretty lightweight and solid. My biggest concern is the geometry and feel of it. I don’t know if it’s just me not being used to riding this size or it’s the bike itself. My knees kind of hit the handlebars/stem. The handlebars are definitely lower so I’d have to most likely change to a higher rise bars and see if that helps.

Is there anything else I should change or upgrade ? I would like to go for bigger wheels/tires but I’m not sure it’ll work. I’d love to hear what you have to say. Thanks in advance. Fairly new here and it’s my first post🙏