Parenting

My kid was very ashamed of making mistakes and was unreceptive to help. (Local culture where I am is fucked up). First I started to work on the "mistakes are okay if we safely experiment".

I play games where either I or a toy was a baby and my kid was a parent/teacher/sensei. Then I would make mistakes or not know how to do stuff, and then my kid teaches me how. Could be silly stuff like avatar airbending lessons or magic lessons.

I also told stories about penicillin and how it was a mistake that was really good. I'd teach cool things like chopping wood with an axe, but safely (wide legs, hand near the axe head). Also I would tell stories about where I made mistakes and was dumb as a kid. Like cutting with a knife towards myself, breaking a window, etc.

Now my kid is pretty okay with mistakes. Much less shame. Now I can just straight up say "can I show you a trick? It's a big tricky to do, but I think it's easier".

Working on fear of other kids next, but that'll take some time

Read to them at bedtime. They learn so much from books.

Talk to them, read to them, and if you’re multilingual, use all the language you can. Toddlers are like sponges.

For playtime, it’s about exploration. It doesn’t need to be a slick idea from the internet. Sticks and rocks are just as fun as a $200 play set, often more fun. See what you can do to involve them in what you’re doing. They want to be like you and be helpful. Of course, they’re pretty useless until they’re no longer toddlers, but often there’s something to do.

Check for local libraries or activity centres that have toddler activities.

Narrate your life.

When you are around them, just explain what you are doing and why, what you can see/hear etc.

Describe your memories of other times a similar event hapened and how it was the same or different.

Ask questions of them and then pretend they have answered(if they are not speaking yet). Be a little theatrical, showing a range of emotions and tones, but mostly light and cheery.

This expands vocabulary, models socialisation/conversation, and increases your bond.

Like others have said: spend time with them. Read to them. Talk to them. Include them in your activities when you can.

Please suggest some ideas

Play with them. Tickle them. Throw them in the air. Make them gigle as much as you can. Increases bond, phisical strength, coordination...